25555268858 has 16 divisors (see below), whose sum is σ = 45713773440. Its totient is φ = 10476072816.

The previous prime is 25555268839. The next prime is 25555268861. The reversal of 25555268858 is 85886255552.

It is a junction number, because it is equal to n+sod(n) for n = 25555268797 and 25555268806.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39681773 + ... + 39682416.

It is an arithmetic number, because the mean of its divisors is an integer number (2857110840).

Almost surely, 2^25555268858 is an apocalyptic number.

25555268858 is a deficient number, since it is larger than the sum of its proper divisors (20158504582).

25555268858 is a wasteful number, since it uses less digits than its factorization.

25555268858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79364221.

The product of its digits is 38400000, while the sum is 59.

The spelling of 25555268858 in words is "twenty-five billion, five hundred fifty-five million, two hundred sixty-eight thousand, eight hundred fifty-eight".