25138877750 has 64 divisors (see below), whose sum is σ = 54664751232. Its totient is φ = 8477712000.

The previous prime is 25138877747. The next prime is 25138877779. The reversal of 25138877750 is 5777883152.

It is a junction number, because it is equal to n+sod(n) for n = 25138877692 and 25138877701.

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 in 31 ways as a sum of consecutive naturals, for example, 10997 + ... + 224496.

It is an arithmetic number, because the mean of its divisors is an integer number (854136738).

Almost surely, 2^25138877750 is an apocalyptic number.

25138877750 is an abundant number, since it is smaller than the sum of its proper divisors (29525873482).

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

25138877750 is a wasteful number, since it uses less digits than its factorization.

25138877750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235578 (or 235568 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 53.

The spelling of 25138877750 in words is "twenty-five billion, one hundred thirty-eight million, eight hundred seventy-seven thousand, seven hundred fifty".