25426061640631 has 16 divisors (see below), whose sum is σ = 28094735300544. Its totient is φ = 22887910070784.

The previous prime is 25426061640601. The next prime is 25426061640647. The reversal of 25426061640631 is 13604616062452.

It is a cyclic number.

It is not a de Polignac number, because 25426061640631 - 2⁵ = 25426061640599 is a prime.

It is a super-2 number, since 2×25426061640631² (a number of 28 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 (25426061640601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1474201 + ... + 7281853.

It is an arithmetic number, because the mean of its divisors is an integer number (1755920956284).

Almost surely, 2^{25426061640631} is an apocalyptic number.

25426061640631 is a deficient number, since it is larger than the sum of its proper divisors (2668673659913).

25426061640631 is a wasteful number, since it uses less digits than its factorization.

25426061640631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5818890.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 25426061640631 in words is "twenty-five trillion, four hundred twenty-six billion, sixty-one million, six hundred forty thousand, six hundred thirty-one".