25331394140 has 24 divisors (see below), whose sum is σ = 57287922720. Its totient is φ = 9353130048.

The previous prime is 25331394131. The next prime is 25331394163. The reversal of 25331394140 is 4149313352.

It is a self number, because there is not a number n which added to its sum of digits gives 25331394140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48713960 + ... + 48714479.

It is an arithmetic number, because the mean of its divisors is an integer number (2386996780).

Almost surely, 2^25331394140 is an apocalyptic number.

25331394140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25331394140 is an abundant number, since it is smaller than the sum of its proper divisors (31956528580).

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

25331394140 is a wasteful number, since it uses less digits than its factorization.

25331394140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97428461 (or 97428459 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 25331394140 in words is "twenty-five billion, three hundred thirty-one million, three hundred ninety-four thousand, one hundred forty".