25015516972 has 36 divisors (see below), whose sum is σ = 44372948256. Its totient is φ = 12339396960.

The previous prime is 25015516931. The next prime is 25015516973. The reversal of 25015516972 is 27961551052.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25015516973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13369197 + ... + 13371067.

It is an arithmetic number, because the mean of its divisors is an integer number (1232581896).

Almost surely, 2^25015516972 is an apocalyptic number.

It is an amenable number.

25015516972 is a deficient number, since it is larger than the sum of its proper divisors (19357431284).

25015516972 is a wasteful number, since it uses less digits than its factorization.

25015516972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326 (or 2185 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 43.

The spelling of 25015516972 in words is "twenty-five billion, fifteen million, five hundred sixteen thousand, nine hundred seventy-two".