25530004688 has 10 divisors (see below), whose sum is σ = 49464384114. Its totient is φ = 12765002336.

The previous prime is 25530004679. The next prime is 25530004723. The reversal of 25530004688 is 88640003552.

It can be written as a sum of positive squares in only one way, i.e., 15813565504 + 9716439184 = 125752^2 + 98572^2 .

It is a super-2 number, since 2×25530004688² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 797812631 + ... + 797812662.

Almost surely, 2^25530004688 is an apocalyptic number.

It is an amenable number.

25530004688 is a deficient number, since it is larger than the sum of its proper divisors (23934379426).

25530004688 is a wasteful number, since it uses less digits than its factorization.

25530004688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595625301 (or 1595625295 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 25530004688 in words is "twenty-five billion, five hundred thirty million, four thousand, six hundred eighty-eight".