| Base | Representation |
|---|---|
| bin | 101111101110… |
| … | …0011001100000 |
| 3 | 1202002010222200 |
| 4 | 1133130121200 |
| 5 | 22401120000 |
| 6 | 2252133200 |
| 7 | 422444415 |
| oct | 137343140 |
| 9 | 52063880 |
| 10 | 25020000 |
| 11 | 13139995 |
| 12 | 8467200 |
| 13 | 5250345 |
| 14 | 347410c |
| 15 | 22e3500 |
| hex | 17dc660 |
25020000 has 180 divisors, whose sum is σ = 89549460. Its totient is φ = 6624000.
The previous prime is 25019999. The next prime is 25020001. The reversal of 25020000 is 2052.
It is an interprime number because it is at equal distance from previous prime (25019999) and next prime (25020001).
It is a tau number, because it is divible by the number of its divisors (180).
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (25020001) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 179931 + ... + 180069.
It is an arithmetic number, because the mean of its divisors is an integer number (497497).
Almost surely, 225020000 is an apocalyptic number.
25020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 25020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44774730).
25020000 is an abundant number, since it is smaller than the sum of its proper divisors (64529460).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
25020000 is a wasteful number, since it uses less digits than its factorization.
25020000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 175 (or 149 counting only the distinct ones).
The product of its (nonzero) digits is 20, while the sum is 9.
The square root of 25020000 is about 5001.9996001599. Note that the first 3 decimals coincide. The cubic root of 25020000 is about 292.4797268439.
Adding to 25020000 its reverse (2052), we get a palindrome (25022052).
The spelling of 25020000 in words is "twenty-five million, twenty thousand".
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