2531254315515 has 16 divisors (see below), whose sum is σ = 4050637214208. Its totient is φ = 1349792198496.

The previous prime is 2531254315487. The next prime is 2531254315547. The reversal of 2531254315515 is 5155134521352.

It is not a de Polignac number, because 2531254315515 - 2⁵ = 2531254315483 is a prime.

It is a super-2 number, since 2×2531254315515² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13031827 + ... + 13224636.

It is an arithmetic number, because the mean of its divisors is an integer number (253164825888).

Almost surely, 2^{2531254315515} is an apocalyptic number.

2531254315515 is a deficient number, since it is larger than the sum of its proper divisors (1519382898693).

2531254315515 is a wasteful number, since it uses less digits than its factorization.

2531254315515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26262898.

The product of its digits is 450000, while the sum is 42.

Adding to 2531254315515 its reverse (5155134521352), we get a palindrome (7686388836867).

The spelling of 2531254315515 in words is "two trillion, five hundred thirty-one billion, two hundred fifty-four million, three hundred fifteen thousand, five hundred fifteen".