25876830965 has 4 divisors (see below), whose sum is σ = 31052197164. Its totient is φ = 20701464768.

The previous prime is 25876830943. The next prime is 25876830983. The reversal of 25876830965 is 56903867852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14737717201 + 11139113764 = 121399^2 + 105542^2 .

It is a cyclic number.

It is not a de Polignac number, because 25876830965 - 2¹² = 25876826869 is a prime.

It is a super-2 number, since 2×25876830965² (a number of 22 digits) contains 22 as substring.

It is a Duffinian 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, 2587683092 + ... + 2587683101.

It is an arithmetic number, because the mean of its divisors is an integer number (7763049291).

Almost surely, 2^25876830965 is an apocalyptic number.

It is an amenable number.

25876830965 is a deficient number, since it is larger than the sum of its proper divisors (5175366199).

25876830965 is an equidigital number, since it uses as much as digits as its factorization.

25876830965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5175366198.

The product of its (nonzero) digits is 21772800, while the sum is 59.

The spelling of 25876830965 in words is "twenty-five billion, eight hundred seventy-six million, eight hundred thirty thousand, nine hundred sixty-five".