157423725 has 36 divisors (see below), whose sum is σ = 284909716. Its totient is φ = 83082240.

The previous prime is 157423703. The next prime is 157423729. The reversal of 157423725 is 527324751.

It can be written as a sum of positive squares in 6 ways, for example, as 21609 + 157402116 = 147^2 + 12546^2 .

It is not a de Polignac number, because 157423725 - 2⁷ = 157423597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157423725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157423729) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18219 + ... + 25431.

Almost surely, 2^157423725 is an apocalyptic number.

157423725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157423725 is a deficient number, since it is larger than the sum of its proper divisors (127485991).

157423725 is a wasteful number, since it uses less digits than its factorization.

157423725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7326 (or 7318 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 157423725 is about 12546.8611612626. The cubic root of 157423725 is about 539.9539569796.

The spelling of 157423725 in words is "one hundred fifty-seven million, four hundred twenty-three thousand, seven hundred twenty-five".