25291442 has 16 divisors (see below), whose sum is σ = 41517792. Its totient is φ = 11459520.

The previous prime is 25291429. The next prime is 25291459. The reversal of 25291442 is 24419252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5978 + ... + 9290.

It is an arithmetic number, because the mean of its divisors is an integer number (2594862).

Almost surely, 2^25291442 is an apocalyptic number.

25291442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25291442 is a deficient number, since it is larger than the sum of its proper divisors (16226350).

25291442 is a wasteful number, since it uses less digits than its factorization.

25291442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673.

The product of its digits is 5760, while the sum is 29.

The square root of 25291442 is about 5029.0597530751. The cubic root of 25291442 is about 293.5336289846.

The spelling of 25291442 in words is "twenty-five million, two hundred ninety-one thousand, four hundred forty-two".