155289925 has 48 divisors (see below), whose sum is σ = 234092160. Its totient is φ = 99912960.

The previous prime is 155289887. The next prime is 155289931. The reversal of 155289925 is 529982551.

It is a happy number.

It is not a de Polignac number, because 155289925 - 2¹³ = 155281733 is a prime.

It is a super-2 number, since 2×155289925² = 48229921613011250, which contains 22 as substring.

It is a congruent number.

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, 187362 + ... + 188188.

It is an arithmetic number, because the mean of its divisors is an integer number (4876920).

Almost surely, 2^155289925 is an apocalyptic number.

It is an amenable number.

155289925 is a deficient number, since it is larger than the sum of its proper divisors (78802235).

155289925 is a wasteful number, since it uses less digits than its factorization.

155289925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 905 counting only the distinct ones).

The product of its digits is 324000, while the sum is 46.

The square root of 155289925 is about 12461.5378264482. The cubic root of 155289925 is about 537.5032485832.

The spelling of 155289925 in words is "one hundred fifty-five million, two hundred eighty-nine thousand, nine hundred twenty-five".