25945992 has 48 divisors (see below), whose sum is σ = 71077500. Its totient is φ = 8549376.

The previous prime is 25945979. The next prime is 25945999. The reversal of 25945992 is 29954952.

25945992 is a `hidden beast` number, since 2 + 59 + 4 + 599 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23677956 + 2268036 = 4866^2 + 1506^2 .

It is not an unprimeable number, because it can be changed into a prime (25945999) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4384 + ... + 8432.

Almost surely, 2^25945992 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 25945992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35538750).

25945992 is an abundant number, since it is smaller than the sum of its proper divisors (45131508).

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

25945992 is a wasteful number, since it uses less digits than its factorization.

25945992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150 (or 4143 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 25945992 is about 5093.7208404073. The cubic root of 25945992 is about 296.0443383788.

The spelling of 25945992 in words is "twenty-five million, nine hundred forty-five thousand, nine hundred ninety-two".