25140128790 has 64 divisors (see below), whose sum is σ = 69498814464. Its totient is φ = 5701062528.

The previous prime is 25140128777. The next prime is 25140128831. The reversal of 25140128790 is 9782104152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 444649 + ... + 497988.

It is an arithmetic number, because the mean of its divisors is an integer number (1085918976).

Almost surely, 2^25140128790 is an apocalyptic number.

25140128790 is an abundant number, since it is smaller than the sum of its proper divisors (44358685674).

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

25140128790 is a wasteful number, since it uses less digits than its factorization.

25140128790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942781.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 25140128790 in words is "twenty-five billion, one hundred forty million, one hundred twenty-eight thousand, seven hundred ninety".