725155155 has 24 divisors (see below), whose sum is σ = 1311586848. Its totient is φ = 369933696.

The previous prime is 725155153. The next prime is 725155199. The reversal of 725155155 is 551551527.

725155155 is a `hidden beast` number, since 7 + 2 + 51 + 551 + 55 = 666.

It is not a de Polignac number, because 725155155 - 2¹ = 725155153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (725155153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 349282 + ... + 351351.

It is an arithmetic number, because the mean of its divisors is an integer number (54649452).

Almost surely, 2^725155155 is an apocalyptic number.

725155155 is a deficient number, since it is larger than the sum of its proper divisors (586431693).

725155155 is a wasteful number, since it uses less digits than its factorization.

725155155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700667 (or 700664 counting only the distinct ones).

The product of its digits is 43750, while the sum is 36.

The square root of 725155155 is about 26928.7050375617. The cubic root of 725155155 is about 898.4149694292.

The spelling of 725155155 in words is "seven hundred twenty-five million, one hundred fifty-five thousand, one hundred fifty-five".