25797966962989 has 32 divisors (see below), whose sum is σ = 28210381524864. Its totient is φ = 23449634058240.

The previous prime is 25797966962941. The next prime is 25797966963011. The reversal of 25797966962989 is 98926966979752.

It is not a de Polignac number, because 25797966962989 - 2¹⁹ = 25797966438701 is a prime.

It is a super-4 number, since 4×25797966962989⁴ (a number of 55 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25797966962897 and 25797966962906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25797966962689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 604954102 + ... + 604996744.

It is an arithmetic number, because the mean of its divisors is an integer number (881574422652).

Almost surely, 2^{25797966962989} is an apocalyptic number.

It is an amenable number.

25797966962989 is a deficient number, since it is larger than the sum of its proper divisors (2412414561875).

25797966962989 is a wasteful number, since it uses less digits than its factorization.

25797966962989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45517.

The product of its digits is 99995938560, while the sum is 94.

The spelling of 25797966962989 in words is "twenty-five trillion, seven hundred ninety-seven billion, nine hundred sixty-six million, nine hundred sixty-two thousand, nine hundred eighty-nine".