25426803555 has 40 divisors (see below), whose sum is σ = 45617820864. Its totient is φ = 13549680000.

The previous prime is 25426803533. The next prime is 25426803557. The reversal of 25426803555 is 55530862452.

It is not a de Polignac number, because 25426803555 - 2⁷ = 25426803427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 25426803555.

It is not an unprimeable number, because it can be changed into a prime (25426803557) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 473055 + ... + 524055.

Almost surely, 2^25426803555 is an apocalyptic number.

25426803555 is a deficient number, since it is larger than the sum of its proper divisors (20191017309).

25426803555 is a wasteful number, since it uses less digits than its factorization.

25426803555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52249 (or 52240 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 45.

The spelling of 25426803555 in words is "twenty-five billion, four hundred twenty-six million, eight hundred three thousand, five hundred fifty-five".