25857654050 has 18 divisors (see below), whose sum is σ = 48097351539. Its totient is φ = 10342606800.

The previous prime is 25857654029. The next prime is 25857654073. The reversal of 25857654050 is 5045675852.

It can be written as a sum of positive squares in 5 ways, for example, as 576336049 + 25281318001 = 24007^2 + 159001^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=113705.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25857653986 and 25857654004.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1125680 + ... + 1148420.

Almost surely, 2^25857654050 is an apocalyptic number.

25857654050 is a deficient number, since it is larger than the sum of its proper divisors (22239697489).

25857654050 is an frugal number, since it uses more digits than its factorization.

25857654050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45494 (or 22748 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 47.

The spelling of 25857654050 in words is "twenty-five billion, eight hundred fifty-seven million, six hundred fifty-four thousand, fifty".