157755924225 has 27 divisors (see below), whose sum is σ = 282569060163. Its totient is φ = 84133315440.

The previous prime is 157755924191. The next prime is 157755924241. The reversal of 157755924225 is 522429557751.

The square root of 157755924225 is 397185.

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

157755924225 is a `hidden beast` number, since 1 + 5 + 7 + 7 + 5 + 592 + 42 + 2 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56792132721 + 100963791504 = 238311^2 + 317748^2 .

It is not a de Polignac number, because 157755924225 - 2²⁵ = 157722369793 is a prime.

It is a Curzon 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, 5944536 + ... + 5971014.

Almost surely, 2^157755924225 is an apocalyptic number.

157755924225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

157755924225 is the 397185-th square number.

157755924225 is the 198593-rd centered octagonal number.

It is an amenable number.

157755924225 is a deficient number, since it is larger than the sum of its proper divisors (124813135938).

157755924225 is an frugal number, since it uses more digits than its factorization.

157755924225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52974 (or 26487 counting only the distinct ones).

The product of its digits is 8820000, while the sum is 54.

The spelling of 157755924225 in words is "one hundred fifty-seven billion, seven hundred fifty-five million, nine hundred twenty-four thousand, two hundred twenty-five".