25128827320 has 16 divisors (see below), whose sum is σ = 56539861560. Its totient is φ = 10051530912.

The previous prime is 25128827299. The next prime is 25128827327. The reversal of 25128827320 is 2372882152.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 628220683 = 25128827320 / (2 + 5 + 1 + 2 + 8 + 8 + 2 + 7 + 3 + 2 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25128827327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314110302 + ... + 314110381.

Almost surely, 2^25128827320 is an apocalyptic number.

25128827320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25128827320 is an abundant number, since it is smaller than the sum of its proper divisors (31411034240).

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

25128827320 is a wasteful number, since it uses less digits than its factorization.

25128827320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628220694 (or 628220690 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 25128827320 in words is "twenty-five billion, one hundred twenty-eight million, eight hundred twenty-seven thousand, three hundred twenty".