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25420032 = 2832111759
BaseRepresentation
bin110000011111…
…0000100000000
31202211110201200
41200332010000
523001420112
62304501200
7426031611
oct140760400
952743650
1025420032
11133924a0
12861a800
135360451
143539c08
152371cdc
hex183e100

25420032 has 216 divisors, whose sum is σ = 86093280. Its totient is φ = 7127040.

The previous prime is 25420007. The next prime is 25420033. The reversal of 25420032 is 23002452.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 25419987 and 25420014.

It is not an unprimeable number, because it can be changed into a prime (25420033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430819 + ... + 430877.

It is an arithmetic number, because the mean of its divisors is an integer number (398580).

Almost surely, 225420032 is an apocalyptic number.

25420032 is a gapful number since it is divisible by the number (22) 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 25420032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43046640).

25420032 is an abundant number, since it is smaller than the sum of its proper divisors (60673248).

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

25420032 is a wasteful number, since it uses less digits than its factorization.

25420032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 25420032 is about 5041.8282398352. The cubic root of 25420032 is about 294.0302620522.

Adding to 25420032 its reverse (23002452), we get a palindrome (48422484).

The spelling of 25420032 in words is "twenty-five million, four hundred twenty thousand, thirty-two".