25416456431 has 2 divisors, whose sum is σ = 25416456432. Its totient is φ = 25416456430.

The previous prime is 25416456397. The next prime is 25416456437. The reversal of 25416456431 is 13465461452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25416456431 - 2⁶ = 25416456367 is a prime.

It is a super-2 number, since 2×25416456431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25416456437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12708228215 + 12708228216.

It is an arithmetic number, because the mean of its divisors is an integer number (12708228216).

Almost surely, 2^25416456431 is an apocalyptic number.

25416456431 is a deficient number, since it is larger than the sum of its proper divisors (1).

25416456431 is an equidigital number, since it uses as much as digits as its factorization.

25416456431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 41.

The spelling of 25416456431 in words is "twenty-five billion, four hundred sixteen million, four hundred fifty-six thousand, four hundred thirty-one".