25539422080 has 64 divisors (see below), whose sum is σ = 61231664880. Its totient is φ = 10186240000.

The previous prime is 25539422047. The next prime is 25539422089. The reversal of 25539422080 is 8022493552.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25539422089) 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, 164580 + ... + 279580.

Almost surely, 2^25539422080 is an apocalyptic number.

25539422080 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 25539422080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30615832440).

25539422080 is an abundant number, since it is smaller than the sum of its proper divisors (35692242800).

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

25539422080 is a wasteful number, since it uses less digits than its factorization.

25539422080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115367 (or 115355 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 25539422080 in words is "twenty-five billion, five hundred thirty-nine million, four hundred twenty-two thousand, eighty".