25627750920 has 256 divisors, whose sum is σ = 94385088000. Its totient is φ = 6152306688.

The previous prime is 25627750891. The next prime is 25627750927. The reversal of 25627750920 is 2905772652.

25627750920 is a `hidden beast` number, since 2 + 56 + 2 + 77 + 509 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (25627750927) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 391936 + ... + 452624.

It is an arithmetic number, because the mean of its divisors is an integer number (368691750).

Almost surely, 2^25627750920 is an apocalyptic number.

25627750920 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 25627750920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47192544000).

25627750920 is an abundant number, since it is smaller than the sum of its proper divisors (68757337080).

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

25627750920 is a wasteful number, since it uses less digits than its factorization.

25627750920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60749 (or 60739 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 25627750920 in words is "twenty-five billion, six hundred twenty-seven million, seven hundred fifty thousand, nine hundred twenty".