25912780 has 12 divisors (see below), whose sum is σ = 54416880. Its totient is φ = 10365104.

The previous prime is 25912771. The next prime is 25912781. The reversal of 25912780 is 8721952.

It is not an unprimeable number, because it can be changed into a prime (25912781) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 647800 + ... + 647839.

It is an arithmetic number, because the mean of its divisors is an integer number (4534740).

Almost surely, 2^25912780 is an apocalyptic number.

25912780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25912780 is an abundant number, since it is smaller than the sum of its proper divisors (28504100).

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

25912780 is a wasteful number, since it uses less digits than its factorization.

25912780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295648 (or 1295646 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 25912780 is about 5090.4597041918. The cubic root of 25912780 is about 295.9179678939.

The spelling of 25912780 in words is "twenty-five million, nine hundred twelve thousand, seven hundred eighty".