25508542 has 4 divisors (see below), whose sum is σ = 38262816. Its totient is φ = 12754270.

The previous prime is 25508521. The next prime is 25508563. The reversal of 25508542 is 24580552.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25508521) and next prime (25508563).

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6377134 + ... + 6377137.

It is an arithmetic number, because the mean of its divisors is an integer number (9565704).

Almost surely, 2^25508542 is an apocalyptic number.

25508542 is a deficient number, since it is larger than the sum of its proper divisors (12754274).

25508542 is a wasteful number, since it uses less digits than its factorization.

25508542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12754273.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 25508542 is about 5050.5981823938. The cubic root of 25508542 is about 294.3711280243.

The spelling of 25508542 in words is "twenty-five million, five hundred eight thousand, five hundred forty-two".