155716625 has 16 divisors (see below), whose sum is σ = 196531920. Its totient is φ = 123164800.

The previous prime is 155716621. The next prime is 155716661. The reversal of 155716625 is 526617551.

It can be written as a sum of positive squares in 8 ways, for example, as 76720081 + 78996544 = 8759^2 + 8888^2 .

It is not a de Polignac number, because 155716625 - 2² = 155716621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155716621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4127 + ... + 18123.

It is an arithmetic number, because the mean of its divisors is an integer number (12283245).

Almost surely, 2^155716625 is an apocalyptic number.

It is an amenable number.

155716625 is a deficient number, since it is larger than the sum of its proper divisors (40815295).

155716625 is an equidigital number, since it uses as much as digits as its factorization.

155716625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14101 (or 14091 counting only the distinct ones).

The product of its digits is 63000, while the sum is 38.

The square root of 155716625 is about 12478.6467615683. The cubic root of 155716625 is about 537.9951089691.

The spelling of 155716625 in words is "one hundred fifty-five million, seven hundred sixteen thousand, six hundred twenty-five".