25610978 has 32 divisors (see below), whose sum is σ = 41150592. Its totient is φ = 11939200.

The previous prime is 25610971. The next prime is 25611013. The reversal of 25610978 is 87901652.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25610971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308525 + ... + 308607.

It is an arithmetic number, because the mean of its divisors is an integer number (1285956).

Almost surely, 2^25610978 is an apocalyptic number.

25610978 is a deficient number, since it is larger than the sum of its proper divisors (15539614).

25610978 is a wasteful number, since it uses less digits than its factorization.

25610978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 25610978 is about 5060.7289988696. The cubic root of 25610978 is about 294.7646423059.

The spelling of 25610978 in words is "twenty-five million, six hundred ten thousand, nine hundred seventy-eight".