12515515292 has 12 divisors (see below), whose sum is σ = 25031030640. Its totient is φ = 5363792256.

The previous prime is 12515515291. The next prime is 12515515321. The reversal of 12515515292 is 29251551521.

12515515292 is an admirable number.

It is a super-3 number, since 3×12515515292³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515515291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223491317 + ... + 223491372.

It is an arithmetic number, because the mean of its divisors is an integer number (2085919220).

Almost surely, 2^12515515292 is an apocalyptic number.

It is an amenable number.

12515515292 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12515515292 is a wasteful number, since it uses less digits than its factorization.

12515515292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446982700 (or 446982698 counting only the distinct ones).

The product of its digits is 45000, while the sum is 38.

The spelling of 12515515292 in words is "twelve billion, five hundred fifteen million, five hundred fifteen thousand, two hundred ninety-two".