25965992 has 32 divisors (see below), whose sum is σ = 53303880. Its totient is φ = 11784960.

The previous prime is 25965983. The next prime is 25966007. The reversal of 25965992 is 29956952.

It can be written as a sum of positive squares in 4 ways, for example, as 9205156 + 16760836 = 3034^2 + 4094^2 .

It is an unprimeable number.

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, 4298 + ... + 8390.

Almost surely, 2^25965992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25965992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26651940).

25965992 is an abundant number, since it is smaller than the sum of its proper divisors (27337888).

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

25965992 is a wasteful number, since it uses less digits than its factorization.

25965992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173 (or 4169 counting only the distinct ones).

The product of its digits is 437400, while the sum is 47.

The square root of 25965992 is about 5095.6836636510. The cubic root of 25965992 is about 296.1203856553.

The spelling of 25965992 in words is "twenty-five million, nine hundred sixty-five thousand, nine hundred ninety-two".