25155042 has 32 divisors (see below), whose sum is σ = 56372544. Its totient is φ = 7416000.

The previous prime is 25155037. The next prime is 25155061. The reversal of 25155042 is 24055152.

It is a happy number.

It is a super-2 number, since 2×25155042² = 1265552276043528, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 2709 + ... + 7592.

It is an arithmetic number, because the mean of its divisors is an integer number (1761642).

Almost surely, 2^25155042 is an apocalyptic number.

25155042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25155042 is an abundant number, since it is smaller than the sum of its proper divisors (31217502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25155042 is a wasteful number, since it uses less digits than its factorization.

25155042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10354.

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

The square root of 25155042 is about 5015.4802362286. The cubic root of 25155042 is about 293.0049892956.

It can be divided in two parts, 2515 and 5042, that added together give a palindrome (7557).

The spelling of 25155042 in words is "twenty-five million, one hundred fifty-five thousand, forty-two".