25977340 has 24 divisors (see below), whose sum is σ = 55213200. Its totient is φ = 10265088.

The previous prime is 25977317. The next prime is 25977379. The reversal of 25977340 is 4377952.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 25977340.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6165 + ... + 9484.

It is an arithmetic number, because the mean of its divisors is an integer number (2300550).

Almost surely, 2^25977340 is an apocalyptic number.

25977340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25977340 is an abundant number, since it is smaller than the sum of its proper divisors (29235860).

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

25977340 is a wasteful number, since it uses less digits than its factorization.

25977340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15741 (or 15739 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 25977340 is about 5096.7970334319. The cubic root of 25977340 is about 296.1635175170.

The spelling of 25977340 in words is "twenty-five million, nine hundred seventy-seven thousand, three hundred forty".