25877614431 has 4 divisors (see below), whose sum is σ = 34503485912. Its totient is φ = 17251742952.

The previous prime is 25877614393. The next prime is 25877614487. The reversal of 25877614431 is 13441677852.

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

It is not a de Polignac number, because 25877614431 - 2³⁴ = 8697745247 is a prime.

It is a super-2 number, since 2×25877614431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25877614331) 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 3 ways as a sum of consecutive naturals, for example, 4312935736 + ... + 4312935741.

It is an arithmetic number, because the mean of its divisors is an integer number (8625871478).

Almost surely, 2^25877614431 is an apocalyptic number.

25877614431 is a deficient number, since it is larger than the sum of its proper divisors (8625871481).

25877614431 is an equidigital number, since it uses as much as digits as its factorization.

25877614431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8625871480.

The product of its digits is 1128960, while the sum is 48.

The spelling of 25877614431 in words is "twenty-five billion, eight hundred seventy-seven million, six hundred fourteen thousand, four hundred thirty-one".