25172056982 has 16 divisors (see below), whose sum is σ = 38642878032. Its totient is φ = 12291199200.

The previous prime is 25172056933. The next prime is 25172056993. The reversal of 25172056982 is 28965027152.

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 7 ways as a sum of consecutive naturals, for example, 548732 + ... + 592832.

It is an arithmetic number, because the mean of its divisors is an integer number (2415179877).

Almost surely, 2^25172056982 is an apocalyptic number.

25172056982 is a deficient number, since it is larger than the sum of its proper divisors (13470821050).

25172056982 is a wasteful number, since it uses less digits than its factorization.

25172056982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50783.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 25172056982 in words is "twenty-five billion, one hundred seventy-two million, fifty-six thousand, nine hundred eighty-two".