157725117 has 64 divisors (see below), whose sum is σ = 270827520. Its totient is φ = 89812800.

The previous prime is 157725109. The next prime is 157725119. The reversal of 157725117 is 711527751.

It is not a de Polignac number, because 157725117 - 2³ = 157725109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157725119) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 340428 + ... + 340890.

It is an arithmetic number, because the mean of its divisors is an integer number (4231680).

Almost surely, 2^157725117 is an apocalyptic number.

It is an amenable number.

157725117 is a deficient number, since it is larger than the sum of its proper divisors (113102403).

157725117 is a wasteful number, since it uses less digits than its factorization.

157725117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 545 counting only the distinct ones).

The product of its digits is 17150, while the sum is 36.

The square root of 157725117 is about 12558.8660714254. The cubic root of 157725117 is about 540.2983228156.

The spelling of 157725117 in words is "one hundred fifty-seven million, seven hundred twenty-five thousand, one hundred seventeen".