25761169320 has 128 divisors (see below), whose sum is σ = 81427507200. Its totient is φ = 6507097344.

The previous prime is 25761169309. The next prime is 25761169337. The reversal of 25761169320 is 2396116752.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238971 + ... + 329589.

It is an arithmetic number, because the mean of its divisors is an integer number (636152400).

Almost surely, 2^25761169320 is an apocalyptic number.

25761169320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25761169320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40713753600).

25761169320 is an abundant number, since it is smaller than the sum of its proper divisors (55666337880).

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

25761169320 is a wasteful number, since it uses less digits than its factorization.

25761169320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90759 (or 90755 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 25761169320 in words is "twenty-five billion, seven hundred sixty-one million, one hundred sixty-nine thousand, three hundred twenty".