25507530828 has 60 divisors (see below), whose sum is σ = 71811099360. Its totient is φ = 7848469728.

The previous prime is 25507530821. The next prime is 25507530883. The reversal of 25507530828 is 82803570552.

25507530828 is a `hidden beast` number, since 2 + 550 + 75 + 3 + 0 + 8 + 28 = 666.

It is not an unprimeable number, because it can be changed into a prime (25507530821) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3023748 + ... + 3032171.

It is an arithmetic number, because the mean of its divisors is an integer number (1196851656).

Almost surely, 2^25507530828 is an apocalyptic number.

It is an amenable number.

25507530828 is an abundant number, since it is smaller than the sum of its proper divisors (46303568532).

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

25507530828 is a wasteful number, since it uses less digits than its factorization.

25507530828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6055948 (or 6055937 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 25507530828 in words is "twenty-five billion, five hundred seven million, five hundred thirty thousand, eight hundred twenty-eight".