25578268 has 24 divisors (see below), whose sum is σ = 47552400. Its totient is φ = 11996928.

The previous prime is 25578263. The next prime is 25578269. The reversal of 25578268 is 86287552.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25578263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34243 + ... + 34981.

It is an arithmetic number, because the mean of its divisors is an integer number (1981350).

Almost surely, 2^25578268 is an apocalyptic number.

It is an amenable number.

25578268 is a deficient number, since it is larger than the sum of its proper divisors (21974132).

25578268 is a wasteful number, since it uses less digits than its factorization.

25578268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269 (or 1267 counting only the distinct ones).

The product of its digits is 268800, while the sum is 43.

The square root of 25578268 is about 5057.4962184860. The cubic root of 25578268 is about 294.6390990182.

The spelling of 25578268 in words is "twenty-five million, five hundred seventy-eight thousand, two hundred sixty-eight".