25994260878 has 16 divisors (see below), whose sum is σ = 52614890496. Its totient is φ = 8560358840.

The previous prime is 25994260861. The next prime is 25994260879. The reversal of 25994260878 is 87806249952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25994260879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26098158 + ... + 26099153.

It is an arithmetic number, because the mean of its divisors is an integer number (3288430656).

Almost surely, 2^25994260878 is an apocalyptic number.

25994260878 is an abundant number, since it is smaller than the sum of its proper divisors (26620629618).

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

25994260878 is a wasteful number, since it uses less digits than its factorization.

25994260878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52197399.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 25994260878 in words is "twenty-five billion, nine hundred ninety-four million, two hundred sixty thousand, eight hundred seventy-eight".