25459032720 has 640 divisors, whose sum is σ = 97502330880. Its totient is φ = 5419008000.

The previous prime is 25459032719. The next prime is 25459032727. The reversal of 25459032720 is 2723095452.

It is a super-3 number, since 3×25459032720³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25459032727) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 40346805 + ... + 40347435.

It is an arithmetic number, because the mean of its divisors is an integer number (152347392).

Almost surely, 2^25459032720 is an apocalyptic number.

25459032720 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 25459032720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48751165440).

25459032720 is an abundant number, since it is smaller than the sum of its proper divisors (72043298160).

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

25459032720 is a wasteful number, since it uses less digits than its factorization.

25459032720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 25459032720 in words is "twenty-five billion, four hundred fifty-nine million, thirty-two thousand, seven hundred twenty".