155855625 has 40 divisors (see below), whose sum is σ = 262565952. Its totient is φ = 82200000.

The previous prime is 155855551. The next prime is 155855629. The reversal of 155855625 is 526558551.

It is a happy number.

It is not a de Polignac number, because 155855625 - 2¹⁴ = 155839241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155855629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 188964 + ... + 189786.

Almost surely, 2^155855625 is an apocalyptic number.

155855625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155855625 is a deficient number, since it is larger than the sum of its proper divisors (106710327).

155855625 is an equidigital number, since it uses as much as digits as its factorization.

155855625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947 (or 932 counting only the distinct ones).

The product of its digits is 300000, while the sum is 42.

The square root of 155855625 is about 12484.2150333932. The cubic root of 155855625 is about 538.1551412929.

The spelling of 155855625 in words is "one hundred fifty-five million, eight hundred fifty-five thousand, six hundred twenty-five".