156550792225 has 9 divisors (see below), whose sum is σ = 194125435513. Its totient is φ = 125239051120.

The previous prime is 156550792121. The next prime is 156550792243. The reversal of 156550792225 is 522297055651.

The square root of 156550792225 is 395665.

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 17075432929 + 139475359296 = 130673^2 + 373464^2 .

It is not a de Polignac number, because 156550792225 - 2³³ = 147960857633 is a prime.

It is a Duffinian number.

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, 1938759 + ... + 2017891.

Almost surely, 2^156550792225 is an apocalyptic number.

156550792225 is the 395665-th square number.

156550792225 is the 197833-rd centered octagonal number.

It is an amenable number.

156550792225 is a deficient number, since it is larger than the sum of its proper divisors (37574643288).

156550792225 is an frugal number, since it uses more digits than its factorization.

156550792225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158276 (or 79138 counting only the distinct ones).

The product of its (nonzero) digits is 1890000, while the sum is 49.

Multiplying 156550792225 by its sum of digits (49), we get a square (7670988819025 = 2769655²).

The spelling of 156550792225 in words is "one hundred fifty-six billion, five hundred fifty million, seven hundred ninety-two thousand, two hundred twenty-five".