25265155 has 32 divisors (see below), whose sum is σ = 34467840. Its totient is φ = 17677440.

The previous prime is 25265147. The next prime is 25265171. The reversal of 25265155 is 55156252.

It is not a de Polignac number, because 25265155 - 2³ = 25265147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67549 + ... + 67921.

It is an arithmetic number, because the mean of its divisors is an integer number (1077120).

Almost surely, 2^25265155 is an apocalyptic number.

25265155 is a deficient number, since it is larger than the sum of its proper divisors (9202685).

25265155 is a wasteful number, since it uses less digits than its factorization.

25265155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451.

The product of its digits is 15000, while the sum is 31.

The square root of 25265155 is about 5026.4455632186. The cubic root of 25265155 is about 293.4318976910.

The spelling of 25265155 in words is "twenty-five million, two hundred sixty-five thousand, one hundred fifty-five".