25798255026 has 32 divisors (see below), whose sum is σ = 54444804480. Its totient is φ = 8133105024.

The previous prime is 25798255013. The next prime is 25798255031. The reversal of 25798255026 is 62055289752.

It is a self number, because there is not a number n which added to its sum of digits gives 25798255026.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1037965 + ... + 1062528.

It is an arithmetic number, because the mean of its divisors is an integer number (1701400140).

Almost surely, 2^25798255026 is an apocalyptic number.

25798255026 is an abundant number, since it is smaller than the sum of its proper divisors (28646549454).

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

25798255026 is a wasteful number, since it uses less digits than its factorization.

25798255026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100610.

The product of its (nonzero) digits is 3024000, while the sum is 51.

The spelling of 25798255026 in words is "twenty-five billion, seven hundred ninety-eight million, two hundred fifty-five thousand, twenty-six".