157790425 has 12 divisors (see below), whose sum is σ = 210711340. Its totient is φ = 116521920.

The previous prime is 157790407. The next prime is 157790441. The reversal of 157790425 is 524097751.

It can be written as a sum of positive squares in 6 ways, for example, as 1115136 + 156675289 = 1056^2 + 12517^2 .

It is not a de Polignac number, because 157790425 - 2²⁷ = 23572697 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242430 + ... + 243079.

Almost surely, 2^157790425 is an apocalyptic number.

It is an amenable number.

157790425 is a deficient number, since it is larger than the sum of its proper divisors (52920915).

157790425 is a wasteful number, since it uses less digits than its factorization.

157790425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485532 (or 485527 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 40.

The square root of 157790425 is about 12561.4658778345. The cubic root of 157790425 is about 540.3728848860.

The spelling of 157790425 in words is "one hundred fifty-seven million, seven hundred ninety thousand, four hundred twenty-five".