25740432 has 30 divisors (see below), whose sum is σ = 72037862. Its totient is φ = 8580096.

The previous prime is 25740413. The next prime is 25740433. The reversal of 25740432 is 23404752.

25740432 is a `hidden beast` number, since 257 + 404 + 3 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15397776 + 10342656 = 3924^2 + 3216^2 .

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 25740396 and 25740405.

It is not an unprimeable number, because it can be changed into a prime (25740433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89233 + ... + 89520.

Almost surely, 2^25740432 is an apocalyptic number.

It is an amenable number.

25740432 is an abundant number, since it is smaller than the sum of its proper divisors (46297430).

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

25740432 is a wasteful number, since it uses less digits than its factorization.

25740432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178767 (or 178758 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 25740432 is about 5073.5029319002. The cubic root of 25740432 is about 295.2604498674.

The spelling of 25740432 in words is "twenty-five million, seven hundred forty thousand, four hundred thirty-two".