25708261000 has 32 divisors (see below), whose sum is σ = 60157333080. Its totient is φ = 10283304000.

The previous prime is 25708260911. The next prime is 25708261021. The reversal of 25708261000 is 16280752.

It can be written as a sum of positive squares in 4 ways, for example, as 15459938244 + 10248322756 = 124338^2 + 101234^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12853131 + ... + 12855130.

Almost surely, 2^25708261000 is an apocalyptic number.

25708261000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25708261000 is an abundant number, since it is smaller than the sum of its proper divisors (34449072080).

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

25708261000 is a wasteful number, since it uses less digits than its factorization.

25708261000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25708282 (or 25708268 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The spelling of 25708261000 in words is "twenty-five billion, seven hundred eight million, two hundred sixty-one thousand".