25580099 has 12 divisors (see below), whose sum is σ = 27477720. Its totient is φ = 23803200.

The previous prime is 25580089. The next prime is 25580111. The reversal of 25580099 is 99008552.

It is a happy number.

It is not a de Polignac number, because 25580099 - 2⁴ = 25580083 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25580089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20699 + ... + 21899.

It is an arithmetic number, because the mean of its divisors is an integer number (2289810).

Almost surely, 2^25580099 is an apocalyptic number.

25580099 is a deficient number, since it is larger than the sum of its proper divisors (1897621).

25580099 is a wasteful number, since it uses less digits than its factorization.

25580099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298 (or 1279 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 25580099 is about 5057.6772336716. The cubic root of 25580099 is about 294.6461293524.

The spelling of 25580099 in words is "twenty-five million, five hundred eighty thousand, ninety-nine".