155530525 has 12 divisors (see below), whose sum is σ = 194046112. Its totient is φ = 123657840.

The previous prime is 155530511. The next prime is 155530537. The reversal of 155530525 is 525035551.

It is a happy number.

It is not a de Polignac number, because 155530525 - 2⁵ = 155530493 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 15009 + ... + 23158.

Almost surely, 2^155530525 is an apocalyptic number.

It is an amenable number.

155530525 is a deficient number, since it is larger than the sum of its proper divisors (38515587).

155530525 is a wasteful number, since it uses less digits than its factorization.

155530525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38340 (or 38335 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 155530525 is about 12471.1877942720. The cubic root of 155530525 is about 537.7807006879.

The spelling of 155530525 in words is "one hundred fifty-five million, five hundred thirty thousand, five hundred twenty-five".