25523155 has 16 divisors (see below), whose sum is σ = 35951040. Its totient is φ = 17027712.

The previous prime is 25523149. The next prime is 25523159. The reversal of 25523155 is 55132552.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25523155 is a prime.

It is a super-3 number, since 3×25523155³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25523159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8560 + ... + 11149.

It is an arithmetic number, because the mean of its divisors is an integer number (2246940).

Almost surely, 2^25523155 is an apocalyptic number.

25523155 is a deficient number, since it is larger than the sum of its proper divisors (10427885).

25523155 is a wasteful number, since it uses less digits than its factorization.

25523155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19758.

The product of its digits is 7500, while the sum is 28.

The square root of 25523155 is about 5052.0446355906. The cubic root of 25523155 is about 294.4273291213.

The spelling of 25523155 in words is "twenty-five million, five hundred twenty-three thousand, one hundred fifty-five".