15113939152225 has 27 divisors (see below), whose sum is σ = 18786054991179. Its totient is φ = 12062335948800.

The previous prime is 15113939152211. The next prime is 15113939152231. The reversal of 15113939152225 is 52225193931151.

The square root of 15113939152225 is 3887665.

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

It can be written as a sum of positive squares in 13 ways, for example, as 11257051653409 + 3856887498816 = 3355153^2 + 1963896^2 .

It is a de Polignac number, because none of the positive numbers 2^k-15113939152225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12459965719 + ... + 12459966931.

Almost surely, 2^{15113939152225} is an apocalyptic number.

15113939152225 is the 3887665-th square number.

15113939152225 is the 1943833-rd centered octagonal number.

It is an amenable number.

15113939152225 is a deficient number, since it is larger than the sum of its proper divisors (3672115838954).

15113939152225 is an frugal number, since it uses more digits than its factorization.

15113939152225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3718 (or 1859 counting only the distinct ones).

The product of its digits is 729000, while the sum is 49.

Multiplying 15113939152225 by its sum of digits (49), we get a square (740583018459025 = 27213655²).

It can be divided in two parts, 151139391 and 52225, that added together give a square (151191616 = 12296²).

The spelling of 15113939152225 in words is "fifteen trillion, one hundred thirteen billion, nine hundred thirty-nine million, one hundred fifty-two thousand, two hundred twenty-five".