25815065560631 has 8 divisors (see below), whose sum is σ = 26052045317760. Its totient is φ = 25578088427232.

The previous prime is 25815065560601. The next prime is 25815065560651. The reversal of 25815065560631 is 13606556051852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25815065560631 - 2¹⁰ = 25815065559607 is a prime.

It is a super-2 number, since 2×25815065560631² (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 (25815065560601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23015066 + ... + 24110648.

It is an arithmetic number, because the mean of its divisors is an integer number (3256505664720).

Almost surely, 2^{25815065560631} is an apocalyptic number.

25815065560631 is a deficient number, since it is larger than the sum of its proper divisors (236979757129).

25815065560631 is a wasteful number, since it uses less digits than its factorization.

25815065560631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311865.

The product of its (nonzero) digits is 6480000, while the sum is 53.

The spelling of 25815065560631 in words is "twenty-five trillion, eight hundred fifteen billion, sixty-five million, five hundred sixty thousand, six hundred thirty-one".