25972913571 has 8 divisors (see below), whose sum is σ = 37778783424. Its totient is φ = 15741159720.

The previous prime is 25972913567. The next prime is 25972913641. The reversal of 25972913571 is 17531927952.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25972913571 - 2² = 25972913567 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25972913501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393528961 + ... + 393529026.

It is an arithmetic number, because the mean of its divisors is an integer number (4722347928).

Almost surely, 2^25972913571 is an apocalyptic number.

25972913571 is a deficient number, since it is larger than the sum of its proper divisors (11805869853).

25972913571 is a wasteful number, since it uses less digits than its factorization.

25972913571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787058001.

The product of its digits is 1190700, while the sum is 51.

The spelling of 25972913571 in words is "twenty-five billion, nine hundred seventy-two million, nine hundred thirteen thousand, five hundred seventy-one".