25394211680 has 48 divisors (see below), whose sum is σ = 62602261344. Its totient is φ = 9716044800.

The previous prime is 25394211641. The next prime is 25394211701. The reversal of 25394211680 is 8611249352.

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 7 ways as a sum of consecutive naturals, for example, 3446621 + ... + 3453980.

It is an arithmetic number, because the mean of its divisors is an integer number (1304213778).

Almost surely, 2^25394211680 is an apocalyptic number.

25394211680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25394211680 is an abundant number, since it is smaller than the sum of its proper divisors (37208049664).

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

25394211680 is a wasteful number, since it uses less digits than its factorization.

25394211680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6900639 (or 6900631 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 25394211680 in words is "twenty-five billion, three hundred ninety-four million, two hundred eleven thousand, six hundred eighty".