15137611225 has 27 divisors (see below), whose sum is σ = 20641416061. Its totient is φ = 11004250400.

The previous prime is 15137611211. The next prime is 15137611243. The reversal of 15137611225 is 52211673151.

The square root of 15137611225 is 123035.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 453988249 + 14683622976 = 21307^2 + 121176^2 .

It is not a de Polignac number, because 15137611225 - 2²³ = 15129222617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6765807 + ... + 6768043.

Almost surely, 2^15137611225 is an apocalyptic number.

15137611225 is the 123035-th square number.

15137611225 is the 61518-th centered octagonal number.

It is an amenable number.

15137611225 is a deficient number, since it is larger than the sum of its proper divisors (5503804836).

15137611225 is an frugal number, since it uses more digits than its factorization.

15137611225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506 (or 2253 counting only the distinct ones).

The product of its digits is 12600, while the sum is 34.

The spelling of 15137611225 in words is "fifteen billion, one hundred thirty-seven million, six hundred eleven thousand, two hundred twenty-five".