25982775 has 144 divisors (see below), whose sum is σ = 60662784. Its totient is φ = 10730880.

The previous prime is 25982771. The next prime is 25982777. The reversal of 25982775 is 57728952.

It is a happy number.

It is not a de Polignac number, because 25982775 - 2² = 25982771 is a prime.

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

Its product of digits (352800) is a multiple of the sum of its prime divisors (75).

It is a self number, because there is not a number n which added to its sum of digits gives 25982775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25982771) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 552802 + ... + 552848.

Almost surely, 2^25982775 is an apocalyptic number.

25982775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25982775 is an abundant number, since it is smaller than the sum of its proper divisors (34680009).

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

25982775 is a wasteful number, since it uses less digits than its factorization.

25982775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 75 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 25982775 is about 5097.3301835373. The cubic root of 25982775 is about 296.1841705999.

The spelling of 25982775 in words is "twenty-five million, nine hundred eighty-two thousand, seven hundred seventy-five".