25888889940 has 48 divisors (see below), whose sum is σ = 74256920640. Its totient is φ = 6735320320.

The previous prime is 25888889879. The next prime is 25888889941. The reversal of 25888889940 is 4998888852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25888889941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5259510 + ... + 5264429.

It is an arithmetic number, because the mean of its divisors is an integer number (1547019180).

Almost surely, 2^25888889940 is an apocalyptic number.

25888889940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25888889940 is an abundant number, since it is smaller than the sum of its proper divisors (48368030700).

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

25888889940 is a wasteful number, since it uses less digits than its factorization.

25888889940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10523992 (or 10523990 counting only the distinct ones).

The product of its (nonzero) digits is 106168320, while the sum is 69.

The spelling of 25888889940 in words is "twenty-five billion, eight hundred eighty-eight million, eight hundred eighty-nine thousand, nine hundred forty".