25516442 has 16 divisors (see below), whose sum is σ = 44079552. Its totient is φ = 10851360.

The previous prime is 25516429. The next prime is 25516471. The reversal of 25516442 is 24461552.

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, 5123 + ... + 8790.

It is an arithmetic number, because the mean of its divisors is an integer number (2754972).

Almost surely, 2^25516442 is an apocalyptic number.

25516442 is a deficient number, since it is larger than the sum of its proper divisors (18563110).

25516442 is a wasteful number, since it uses less digits than its factorization.

25516442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14053.

The product of its digits is 9600, while the sum is 29.

The square root of 25516442 is about 5051.3802074285. The cubic root of 25516442 is about 294.4015138179.

Adding to 25516442 its reverse (24461552), we get a palindrome (49977994).

The spelling of 25516442 in words is "twenty-five million, five hundred sixteen thousand, four hundred forty-two".