25155442 has 16 divisors (see below), whose sum is σ = 41211072. Its totient is φ = 11445840.

The previous prime is 25155439. The next prime is 25155451. The reversal of 25155442 is 24455152.

It is a self number, because there is not a number n which added to its sum of digits gives 25155442.

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, 4968 + ... + 8659.

It is an arithmetic number, because the mean of its divisors is an integer number (2575692).

Almost surely, 2^25155442 is an apocalyptic number.

25155442 is a deficient number, since it is larger than the sum of its proper divisors (16055630).

25155442 is a wasteful number, since it uses less digits than its factorization.

25155442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13713.

The product of its digits is 8000, while the sum is 28.

The square root of 25155442 is about 5015.5201126105. The cubic root of 25155442 is about 293.0065423491.

The spelling of 25155442 in words is "twenty-five million, one hundred fifty-five thousand, four hundred forty-two".