111552660025 has 27 divisors (see below), whose sum is σ = 140561653869. Its totient is φ = 87821981280.

The previous prime is 111552660007. The next prime is 111552660049. The reversal of 111552660025 is 520066255111.

The square root of 111552660025 is 333995.

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 7435440441 + 104117219584 = 86229^2 + 322672^2 .

It is not a de Polignac number, because 111552660025 - 2²¹ = 111550562873 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, 111887827 + ... + 111888823.

Almost surely, 2^111552660025 is an apocalyptic number.

111552660025 is the 333995-th square number.

111552660025 is the 166998-th centered octagonal number.

It is an amenable number.

111552660025 is a deficient number, since it is larger than the sum of its proper divisors (29008993844).

111552660025 is an frugal number, since it uses more digits than its factorization.

111552660025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The spelling of 111552660025 in words is "one hundred eleven billion, five hundred fifty-two million, six hundred sixty thousand, twenty-five".