157225761 has 36 divisors (see below), whose sum is σ = 288207504. Its totient is φ = 81673200.

The previous prime is 157225753. The next prime is 157225771. The reversal of 157225761 is 167522751.

157225761 is a `hidden beast` number, since 1 + 572 + 25 + 7 + 61 = 666.

It is not a de Polignac number, because 157225761 - 2³ = 157225753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157225771) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 11355 + ... + 21056.

It is an arithmetic number, because the mean of its divisors is an integer number (8005764).

Almost surely, 2^157225761 is an apocalyptic number.

157225761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

157225761 is a deficient number, since it is larger than the sum of its proper divisors (130981743).

157225761 is a wasteful number, since it uses less digits than its factorization.

157225761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32442 (or 32432 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 157225761 is about 12538.9696945164. The cubic root of 157225761 is about 539.7275271480.

The spelling of 157225761 in words is "one hundred fifty-seven million, two hundred twenty-five thousand, seven hundred sixty-one".