157930225 has 12 divisors (see below), whose sum is σ = 197085724. Its totient is φ = 125536320.

The previous prime is 157930217. The next prime is 157930229. The reversal of 157930225 is 522039751.

It can be written as a sum of positive squares in 6 ways, for example, as 2005056 + 155925169 = 1416^2 + 12487^2 .

It is not a de Polignac number, because 157930225 - 2³ = 157930217 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157930229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16194 + ... + 24043.

Almost surely, 2^157930225 is an apocalyptic number.

It is an amenable number.

157930225 is a deficient number, since it is larger than the sum of its proper divisors (39155499).

157930225 is a wasteful number, since it uses less digits than its factorization.

157930225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40404 (or 40399 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 157930225 is about 12567.0292830088. The cubic root of 157930225 is about 540.5324252594.

Adding to 157930225 its reverse (522039751), we get a palindrome (679969976).

The spelling of 157930225 in words is "one hundred fifty-seven million, nine hundred thirty thousand, two hundred twenty-five".