15236648662225 has 9 divisors (see below), whose sum is σ = 18893468542363. Its totient is φ = 12189303316120.

The previous prime is 15236648662201. The next prime is 15236648662273. The reversal of 15236648662225 is 52226684663251.

The square root of 15236648662225 is 3903415.

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

It can be written as a sum of positive squares in only one way, i.e., 5485193518401 + 9751455143824 = 2342049^2 + 3122732^2 .

It is not a de Polignac number, because 15236648662225 - 2²⁷ = 15236514444497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15236648662225.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19126734 + ... + 19907416.

Almost surely, 2^{15236648662225} is an apocalyptic number.

15236648662225 is the 3903415-th square number.

15236648662225 is the 1951708-th centered octagonal number.

It is an amenable number.

15236648662225 is a deficient number, since it is larger than the sum of its proper divisors (3656819880138).

15236648662225 is an frugal number, since it uses more digits than its factorization.

15236648662225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561376 (or 780688 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 58.

The spelling of 15236648662225 in words is "fifteen trillion, two hundred thirty-six billion, six hundred forty-eight million, six hundred sixty-two thousand, two hundred twenty-five".