1525215013 has 16 divisors (see below), whose sum is σ = 1786153600. Its totient is φ = 1301832000.

The previous prime is 1525215007. The next prime is 1525215017. The reversal of 1525215013 is 3105125251.

It is not a de Polignac number, because 1525215013 - 2²⁵ = 1491660581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525215017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73438 + ... + 91888.

It is an arithmetic number, because the mean of its divisors is an integer number (111634600).

Almost surely, 2^1525215013 is an apocalyptic number.

It is an amenable number.

1525215013 is a deficient number, since it is larger than the sum of its proper divisors (260938587).

1525215013 is an equidigital number, since it uses as much as digits as its factorization.

1525215013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18713 (or 18699 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1525215013 is about 39054.0012418702. The cubic root of 1525215013 is about 1151.0928522420.

The spelling of 1525215013 in words is "one billion, five hundred twenty-five million, two hundred fifteen thousand, thirteen".