25280390680 has 32 divisors (see below), whose sum is σ = 56894581440. Its totient is φ = 10109720320.

The previous prime is 25280390677. The next prime is 25280390687. The reversal of 25280390680 is 8609308252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25280390687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96852 + ... + 244828.

It is an arithmetic number, because the mean of its divisors is an integer number (1777955670).

Almost surely, 2^25280390680 is an apocalyptic number.

25280390680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25280390680 is an abundant number, since it is smaller than the sum of its proper divisors (31614190760).

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

25280390680 is a wasteful number, since it uses less digits than its factorization.

25280390680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152259 (or 152255 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 25280390680 in words is "twenty-five billion, two hundred eighty million, three hundred ninety thousand, six hundred eighty".