25155020 has 48 divisors (see below), whose sum is σ = 58212000. Its totient is φ = 9054720.

The previous prime is 25154999. The next prime is 25155023. The reversal of 25155020 is 2055152.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 25154983 and 25155001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25155023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23456 + ... + 24504.

It is an arithmetic number, because the mean of its divisors is an integer number (1212750).

Almost surely, 2^25155020 is an apocalyptic number.

25155020 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 25155020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29106000).

25155020 is an abundant number, since it is smaller than the sum of its proper divisors (33056980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25155020 is a wasteful number, since it uses less digits than its factorization.

25155020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 25155020 is about 5015.4780430184. The cubic root of 25155020 is about 293.0049038772.

The spelling of 25155020 in words is "twenty-five million, one hundred fifty-five thousand, twenty".