76555237672225 has 27 divisors (see below), whose sum is σ = 102793157326443. Its totient is φ = 56532678608640.

The previous prime is 76555237672223. The next prime is 76555237672231. The reversal of 76555237672225 is 52227673255567.

The square root of 76555237672225 is 8749585.

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 59841008075809 + 16714229596416 = 7735697^2 + 4088304^2 .

It is not a de Polignac number, because 76555237672225 - 2¹ = 76555237672223 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76555237672223) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 568655721 + ... + 568790329.

Almost surely, 2^{76555237672225} is an apocalyptic number.

76555237672225 is the 8749585-th square number.

76555237672225 is the 4374793-rd centered octagonal number.

It is an amenable number.

76555237672225 is a deficient number, since it is larger than the sum of its proper divisors (26237919654218).

76555237672225 is an frugal number, since it uses more digits than its factorization.

76555237672225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269254 (or 134627 counting only the distinct ones).

The product of its digits is 370440000, while the sum is 64.

The spelling of 76555237672225 in words is "seventy-six trillion, five hundred fifty-five billion, two hundred thirty-seven million, six hundred seventy-two thousand, two hundred twenty-five".