155726025 has 48 divisors (see below), whose sum is σ = 316896384. Its totient is φ = 65710080.

The previous prime is 155726017. The next prime is 155726041. The reversal of 155726025 is 520627551.

It is not a de Polignac number, because 155726025 - 2³ = 155726017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4584 + ... + 18233.

It is an arithmetic number, because the mean of its divisors is an integer number (6602008).

Almost surely, 2^155726025 is an apocalyptic number.

155726025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155726025 is an abundant number, since it is smaller than the sum of its proper divisors (161170359).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155726025 is a wasteful number, since it uses less digits than its factorization.

155726025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22850 (or 22845 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 155726025 is about 12479.0233992889. The cubic root of 155726025 is about 538.0059343007.

The spelling of 155726025 in words is "one hundred fifty-five million, seven hundred twenty-six thousand, twenty-five".