25780858250 has 64 divisors (see below), whose sum is σ = 55821153024. Its totient is φ = 8732606400.

The previous prime is 25780858247. The next prime is 25780858267. The reversal of 25780858250 is 5285808752.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56504 + ... + 233996.

It is an arithmetic number, because the mean of its divisors is an integer number (872205516).

Almost surely, 2^25780858250 is an apocalyptic number.

25780858250 is an abundant number, since it is smaller than the sum of its proper divisors (30040294774).

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

25780858250 is a wasteful number, since it uses less digits than its factorization.

25780858250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177600 (or 177590 counting only the distinct ones).

The product of its (nonzero) digits is 1792000, while the sum is 50.

The spelling of 25780858250 in words is "twenty-five billion, seven hundred eighty million, eight hundred fifty-eight thousand, two hundred fifty".