25155163 has 4 divisors (see below), whose sum is σ = 27442008. Its totient is φ = 22868320.

The previous prime is 25155157. The next prime is 25155191. The reversal of 25155163 is 36155152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25155163 - 2²¹ = 23058011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25155103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1143406 + ... + 1143427.

It is an arithmetic number, because the mean of its divisors is an integer number (6860502).

Almost surely, 2^25155163 is an apocalyptic number.

25155163 is a deficient number, since it is larger than the sum of its proper divisors (2286845).

25155163 is a wasteful number, since it uses less digits than its factorization.

25155163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286844.

The product of its digits is 4500, while the sum is 28.

The square root of 25155163 is about 5015.4922988676. The cubic root of 25155163 is about 293.0054590960.

The spelling of 25155163 in words is "twenty-five million, one hundred fifty-five thousand, one hundred sixty-three".