136777927225 has 81 divisors (see below), whose sum is σ = 190983834567. Its totient is φ = 97139381760.

The previous prime is 136777927219. The next prime is 136777927289. The reversal of 136777927225 is 522729777631.

The square root of 136777927225 is 369835.

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 1695215929 + 135082711296 = 41173^2 + 367536^2 .

It is not a de Polignac number, because 136777927225 - 2³ = 136777927217 is a prime.

It is a Duffinian number.

Its product of digits (15558480) is a multiple of the sum of its prime divisors (270).

It is a self number, because there is not a number n which added to its sum of digits gives 136777927225.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 597283411 + ... + 597283639.

Almost surely, 2^136777927225 is an apocalyptic number.

136777927225 is the 369835-th square number.

136777927225 is the 184918-th centered octagonal number.

It is an amenable number.

136777927225 is a deficient number, since it is larger than the sum of its proper divisors (54205907342).

136777927225 is an equidigital number, since it uses as much as digits as its factorization.

136777927225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 270 counting only the distinct ones).

The product of its digits is 15558480, while the sum is 58.

The spelling of 136777927225 in words is "one hundred thirty-six billion, seven hundred seventy-seven million, nine hundred twenty-seven thousand, two hundred twenty-five".