25992090 has 40 divisors (see below), whose sum is σ = 69892020. Its totient is φ = 6931008.

The previous prime is 25992089. The next prime is 25992097. The reversal of 25992090 is 9029952.

It can be written as a sum of positive squares in 2 ways, for example, as 21818241 + 4173849 = 4671^2 + 2043^2 .

It is not an unprimeable number, because it can be changed into a prime (25992097) 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 19 ways as a sum of consecutive naturals, for example, 15235 + ... + 16854.

Almost surely, 2^25992090 is an apocalyptic number.

25992090 is an abundant number, since it is smaller than the sum of its proper divisors (43899930).

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

25992090 is a wasteful number, since it uses less digits than its factorization.

25992090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32108 (or 32099 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 25992090 is about 5098.2438152760. The cubic root of 25992090 is about 296.2195610450.

The spelling of 25992090 in words is "twenty-five million, nine hundred ninety-two thousand, ninety".