25809142482 has 32 divisors (see below), whose sum is σ = 57361219200. Its totient is φ = 8601912144.

The previous prime is 25809142459. The next prime is 25809142493. The reversal of 25809142482 is 28424190852.

25809142482 is a `hidden beast` number, since 2 + 5 + 80 + 91 + 4 + 2 + 482 = 666.

It is a super-2 number, since 2×25809142482² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448444 + ... + 502712.

It is an arithmetic number, because the mean of its divisors is an integer number (1792538100).

Almost surely, 2^25809142482 is an apocalyptic number.

25809142482 is an abundant number, since it is smaller than the sum of its proper divisors (31552076718).

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

25809142482 is a wasteful number, since it uses less digits than its factorization.

25809142482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63087 (or 63081 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 25809142482 in words is "twenty-five billion, eight hundred nine million, one hundred forty-two thousand, four hundred eighty-two".