25005375808 has 42 divisors (see below), whose sum is σ = 57721281306. Its totient is φ = 10716588288.

The previous prime is 25005375799. The next prime is 25005375827. The reversal of 25005375808 is 80857350052.

It can be written as a sum of positive squares in only one way, i.e., 14121044224 + 10884331584 = 118832^2 + 104328^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3983691 + ... + 3989962.

Almost surely, 2^25005375808 is an apocalyptic number.

25005375808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25005375808 is an abundant number, since it is smaller than the sum of its proper divisors (32715905498).

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

25005375808 is an equidigital number, since it uses as much as digits as its factorization.

25005375808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7973679 (or 7973662 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 25005375808 in words is "twenty-five billion, five million, three hundred seventy-five thousand, eight hundred eight".