25471468712515 has 32 divisors (see below), whose sum is σ = 35236373445504. Its totient is φ = 17314753397760.

The previous prime is 25471468712467. The next prime is 25471468712549. The reversal of 25471468712515 is 51521786417452.

It is a de Polignac number, because none of the positive numbers 2^k-25471468712515 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25471468712515.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4758306 + ... + 8578135.

It is an arithmetic number, because the mean of its divisors is an integer number (1101136670172).

Almost surely, 2^{25471468712515} is an apocalyptic number.

25471468712515 is a deficient number, since it is larger than the sum of its proper divisors (9764904732989).

25471468712515 is a wasteful number, since it uses less digits than its factorization.

25471468712515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13336927.

The product of its digits is 18816000, while the sum is 58.

The spelling of 25471468712515 in words is "twenty-five trillion, four hundred seventy-one billion, four hundred sixty-eight million, seven hundred twelve thousand, five hundred fifteen".