155997125 has 24 divisors (see below), whose sum is σ = 205529688. Its totient is φ = 118195200.

The previous prime is 155997103. The next prime is 155997133. The reversal of 155997125 is 521799551.

It can be written as a sum of positive squares in 4 ways, for example, as 41977441 + 114019684 = 6479^2 + 10678^2 .

It is not a de Polignac number, because 155997125 - 2¹² = 155993029 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 43397 + ... + 46853.

It is an arithmetic number, because the mean of its divisors is an integer number (8563737).

Almost surely, 2^155997125 is an apocalyptic number.

It is an amenable number.

155997125 is a deficient number, since it is larger than the sum of its proper divisors (49532563).

155997125 is an equidigital number, since it uses as much as digits as its factorization.

155997125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510 (or 3481 counting only the distinct ones).

The product of its digits is 141750, while the sum is 44.

The square root of 155997125 is about 12489.8809041560. The cubic root of 155997125 is about 538.3179541935.

The spelling of 155997125 in words is "one hundred fifty-five million, nine hundred ninety-seven thousand, one hundred twenty-five".