25802500005 has 24 divisors (see below), whose sum is σ = 45933102072. Its totient is φ = 13389404544.

The previous prime is 25802499959. The next prime is 25802500039. The reversal of 25802500005 is 50000520852.

It can be written as a sum of positive squares in 4 ways, for example, as 15036154884 + 10766345121 = 122622^2 + 103761^2 .

It is not a de Polignac number, because 25802500005 - 2⁶ = 25802499941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7746834 + ... + 7750163.

It is an arithmetic number, because the mean of its divisors is an integer number (1913879253).

Almost surely, 2^25802500005 is an apocalyptic number.

It is an amenable number.

25802500005 is a deficient number, since it is larger than the sum of its proper divisors (20130602067).

25802500005 is a wasteful number, since it uses less digits than its factorization.

25802500005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15497045 (or 15497042 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 25802500005 in words is "twenty-five billion, eight hundred two million, five hundred thousand, five".