25704945 has 40 divisors (see below), whose sum is σ = 52666944. Its totient is φ = 11749536.

The previous prime is 25704919. The next prime is 25704949. The reversal of 25704945 is 54940752.

25704945 is a `hidden beast` number, since 2 + 570 + 49 + 45 = 666.

It is not a de Polignac number, because 25704945 - 2⁹ = 25704433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25704949) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1699 + ... + 7368.

Almost surely, 2^25704945 is an apocalyptic number.

It is an amenable number.

25704945 is an abundant number, since it is smaller than the sum of its proper divisors (26961999).

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

25704945 is an equidigital number, since it uses as much as digits as its factorization.

25704945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9091 (or 9082 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 25704945 is about 5070.0044378679. The cubic root of 25704945 is about 295.1247007032.

The spelling of 25704945 in words is "twenty-five million, seven hundred four thousand, nine hundred forty-five".