1512720116525 has 12 divisors (see below), whose sum is σ = 1877961737652. Its totient is φ = 1208763968640.

The previous prime is 1512720116513. The next prime is 1512720116599. The reversal of 1512720116525 is 5256110272151.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 36674931049 + 1476045185476 = 191507^2 + 1214926^2 .

It is not a de Polignac number, because 1512720116525 - 2⁸ = 1512720116269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35281262 + ... + 35324111.

It is an arithmetic number, because the mean of its divisors is an integer number (156496811471).

Almost surely, 2^{1512720116525} is an apocalyptic number.

It is an amenable number.

1512720116525 is a deficient number, since it is larger than the sum of its proper divisors (365241621127).

1512720116525 is an equidigital number, since it uses as much as digits as its factorization.

1512720116525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70606240 (or 70606235 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 38.

Adding to 1512720116525 its reverse (5256110272151), we get a palindrome (6768830388676).

The spelling of 1512720116525 in words is "one trillion, five hundred twelve billion, seven hundred twenty million, one hundred sixteen thousand, five hundred twenty-five".