157225140 has 72 divisors (see below), whose sum is σ = 478033920. Its totient is φ = 41828544.

The previous prime is 157225139. The next prime is 157225151. The reversal of 157225140 is 41522751.

157225140 is a `hidden beast` number, since 1 + 572 + 2 + 51 + 40 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108541 + ... + 109979.

It is an arithmetic number, because the mean of its divisors is an integer number (6639360).

Almost surely, 2^157225140 is an apocalyptic number.

157225140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157225140 is an abundant number, since it is smaller than the sum of its proper divisors (320808780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157225140 is a wasteful number, since it uses less digits than its factorization.

157225140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061 (or 2056 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 157225140 is about 12538.9449316918. The cubic root of 157225140 is about 539.7268165536.

Adding to 157225140 its reverse (41522751), we get a palindrome (198747891).

The spelling of 157225140 in words is "one hundred fifty-seven million, two hundred twenty-five thousand, one hundred forty".