25308032 has 32 divisors (see below), whose sum is σ = 50769480. Its totient is φ = 12566016.

The previous prime is 25308011. The next prime is 25308071. The reversal of 25308032 is 23080352.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 25307989 and 25308007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20258 + ... + 21470.

Almost surely, 2^25308032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25308032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25384740).

25308032 is an abundant number, since it is smaller than the sum of its proper divisors (25461448).

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

25308032 is a wasteful number, since it uses less digits than its factorization.

25308032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 25308032 is about 5030.7088963684. The cubic root of 25308032 is about 293.5977963885.

Adding to 25308032 its sum of digits (23), we get a triangular number (25308055 = T₇₁₁₄).

Adding to 25308032 its reverse (23080352), we get a palindrome (48388384).

The spelling of 25308032 in words is "twenty-five million, three hundred eight thousand, thirty-two".