25512442 has 8 divisors (see below), whose sum is σ = 39503232. Its totient is φ = 12344700.

The previous prime is 25512437. The next prime is 25512467. The reversal of 25512442 is 24421552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205684 + ... + 205807.

It is an arithmetic number, because the mean of its divisors is an integer number (4937904).

Almost surely, 2^25512442 is an apocalyptic number.

25512442 is a deficient number, since it is larger than the sum of its proper divisors (13990790).

25512442 is a wasteful number, since it uses less digits than its factorization.

25512442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411524.

The product of its digits is 3200, while the sum is 25.

The square root of 25512442 is about 5050.9842605179. The cubic root of 25512442 is about 294.3861293899.

Adding to 25512442 its reverse (24421552), we get a palindrome (49933994).

The spelling of 25512442 in words is "twenty-five million, five hundred twelve thousand, four hundred forty-two".