25042155 has 16 divisors (see below), whose sum is σ = 41151264. Its totient is φ = 12994560.

The previous prime is 25042153. The next prime is 25042159. The reversal of 25042155 is 55124052.

It is a happy number.

It is not a de Polignac number, because 25042155 - 2¹ = 25042153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25042153) 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, 22006 + ... + 23115.

It is an arithmetic number, because the mean of its divisors is an integer number (2571954).

Almost surely, 2^25042155 is an apocalyptic number.

25042155 is a deficient number, since it is larger than the sum of its proper divisors (16109109).

25042155 is a wasteful number, since it uses less digits than its factorization.

25042155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45166.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 25042155 is about 5004.2137244526. The cubic root of 25042155 is about 292.5660308228.

The spelling of 25042155 in words is "twenty-five million, forty-two thousand, one hundred fifty-five".