25975390401 has 24 divisors (see below), whose sum is σ = 37645171200. Its totient is φ = 17259250176.

The previous prime is 25975390367. The next prime is 25975390411. The reversal of 25975390401 is 10409357952.

It is a happy number.

25975390401 is a `hidden beast` number, since 2 + 597 + 53 + 9 + 0 + 4 + 0 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-25975390401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25975390411) 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, 4292560 + ... + 4298606.

It is an arithmetic number, because the mean of its divisors is an integer number (1568548800).

Almost surely, 2^25975390401 is an apocalyptic number.

It is an amenable number.

25975390401 is a deficient number, since it is larger than the sum of its proper divisors (11669780799).

25975390401 is a wasteful number, since it uses less digits than its factorization.

25975390401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7565 (or 7562 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 25975390401 in words is "twenty-five billion, nine hundred seventy-five million, three hundred ninety thousand, four hundred one".