157222985 has 8 divisors (see below), whose sum is σ = 189798336. Its totient is φ = 125024560.

The previous prime is 157222939. The next prime is 157222991. The reversal of 157222985 is 589222751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 157222985 - 2⁸ = 157222729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93311 + ... + 94980.

It is an arithmetic number, because the mean of its divisors is an integer number (23724792).

Almost surely, 2^157222985 is an apocalyptic number.

It is an amenable number.

157222985 is a deficient number, since it is larger than the sum of its proper divisors (32575351).

157222985 is a wasteful number, since it uses less digits than its factorization.

157222985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188463.

The product of its digits is 100800, while the sum is 41.

The square root of 157222985 is about 12538.8589991275. The cubic root of 157222985 is about 539.7243506278.

The spelling of 157222985 in words is "one hundred fifty-seven million, two hundred twenty-two thousand, nine hundred eighty-five".