25112155 has 8 divisors (see below), whose sum is σ = 30199392. Its totient is φ = 20046528.

The previous prime is 25112141. The next prime is 25112177. The reversal of 25112155 is 55121152.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25112155 - 2⁵ = 25112123 is a prime.

It is a super-3 number, since 3×25112155³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2722 + ... + 7591.

It is an arithmetic number, because the mean of its divisors is an integer number (3774924).

Almost surely, 2^25112155 is an apocalyptic number.

25112155 is a deficient number, since it is larger than the sum of its proper divisors (5087237).

25112155 is a wasteful number, since it uses less digits than its factorization.

25112155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10805.

The product of its digits is 500, while the sum is 22.

The square root of 25112155 is about 5011.2029493925. The cubic root of 25112155 is about 292.8383791836.

The spelling of 25112155 in words is "twenty-five million, one hundred twelve thousand, one hundred fifty-five".