25565016 has 16 divisors (see below), whose sum is σ = 63912600. Its totient is φ = 8521664.

The previous prime is 25565011. The next prime is 25565021. The reversal of 25565016 is 61056552.

It is an interprime number because it is at equal distance from previous prime (25565011) and next prime (25565021).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25565011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532581 + ... + 532628.

Almost surely, 2^25565016 is an apocalyptic number.

It is an amenable number.

25565016 is an abundant number, since it is smaller than the sum of its proper divisors (38347584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25565016 is a wasteful number, since it uses less digits than its factorization.

25565016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065218 (or 1065214 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 25565016 is about 5056.1859143034. The cubic root of 25565016 is about 294.5882064422.

The spelling of 25565016 in words is "twenty-five million, five hundred sixty-five thousand, sixteen".