157551225 has 24 divisors (see below), whose sum is σ = 280523712. Its totient is φ = 77563200.

The previous prime is 157551209. The next prime is 157551239. The reversal of 157551225 is 522155751.

It is not a de Polignac number, because 157551225 - 2⁴ = 157551209 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79821 + ... + 81770.

It is an arithmetic number, because the mean of its divisors is an integer number (11688488).

Almost surely, 2^157551225 is an apocalyptic number.

157551225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157551225 is a deficient number, since it is larger than the sum of its proper divisors (122972487).

157551225 is a wasteful number, since it uses less digits than its factorization.

157551225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161617 (or 161612 counting only the distinct ones).

The product of its digits is 17500, while the sum is 33.

The square root of 157551225 is about 12551.9410849478. The cubic root of 157551225 is about 540.0996900998.

The spelling of 157551225 in words is "one hundred fifty-seven million, five hundred fifty-one thousand, two hundred twenty-five".