25947855 has 24 divisors (see below), whose sum is σ = 45220032. Its totient is φ = 13763904.

The previous prime is 25947833. The next prime is 25947881. The reversal of 25947855 is 55874952.

25947855 is a `hidden beast` number, since 2 + 594 + 7 + 8 + 55 = 666.

It is not a de Polignac number, because 25947855 - 2⁹ = 25947343 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 25947855.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7402 + ... + 10328.

It is an arithmetic number, because the mean of its divisors is an integer number (1884168).

Almost surely, 2^25947855 is an apocalyptic number.

25947855 is a deficient number, since it is larger than the sum of its proper divisors (19272177).

25947855 is a wasteful number, since it uses less digits than its factorization.

25947855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135 (or 3132 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 25947855 is about 5093.9037093373. The cubic root of 25947855 is about 296.0514238329.

The spelling of 25947855 in words is "twenty-five million, nine hundred forty-seven thousand, eight hundred fifty-five".