25140806872 has 16 divisors (see below), whose sum is σ = 47624983560. Its totient is φ = 12440811264.

The previous prime is 25140806869. The next prime is 25140806909. The reversal of 25140806872 is 27860804152.

It is a happy number.

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, 16198198 + ... + 16199749.

Almost surely, 2^25140806872 is an apocalyptic number.

It is an amenable number.

25140806872 is a deficient number, since it is larger than the sum of its proper divisors (22484176688).

25140806872 is a wasteful number, since it uses less digits than its factorization.

25140806872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32398050 (or 32398046 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 25140806872 in words is "twenty-five billion, one hundred forty million, eight hundred six thousand, eight hundred seventy-two".