25231155 has 16 divisors (see below), whose sum is σ = 40788384. Its totient is φ = 13317120.

The previous prime is 25231147. The next prime is 25231163. The reversal of 25231155 is 55113252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25231147) and next prime (25231163).

It is not a de Polignac number, because 25231155 - 2³ = 25231147 is a prime.

It is a super-2 number, since 2×25231155² = 1273222365268050, which contains 22 as substring.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7216 + ... + 10125.

It is an arithmetic number, because the mean of its divisors is an integer number (2549274).

Almost surely, 2^25231155 is an apocalyptic number.

25231155 is a deficient number, since it is larger than the sum of its proper divisors (15557229).

25231155 is a wasteful number, since it uses less digits than its factorization.

25231155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17446.

The product of its digits is 1500, while the sum is 24.

The square root of 25231155 is about 5023.0623129720. The cubic root of 25231155 is about 293.3002121981.

The spelling of 25231155 in words is "twenty-five million, two hundred thirty-one thousand, one hundred fifty-five".