25407379320 has 128 divisors (see below), whose sum is σ = 76877441280. Its totient is φ = 6717312000.

The previous prime is 25407379313. The next prime is 25407379321. The reversal of 25407379320 is 2397370452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25407379321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7113135 + ... + 7116705.

It is an arithmetic number, because the mean of its divisors is an integer number (600605010).

Almost surely, 2^25407379320 is an apocalyptic number.

25407379320 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 25407379320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38438720640).

25407379320 is an abundant number, since it is smaller than the sum of its proper divisors (51470061960).

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

25407379320 is a wasteful number, since it uses less digits than its factorization.

25407379320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077 (or 4073 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 42.

The spelling of 25407379320 in words is "twenty-five billion, four hundred seven million, three hundred seventy-nine thousand, three hundred twenty".