25998992 has 20 divisors (see below), whose sum is σ = 53024880. Its totient is φ = 12315168.

The previous prime is 25998983. The next prime is 25999009. The reversal of 25998992 is 29989952.

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 3 ways as a sum of consecutive naturals, for example, 42458 + ... + 43065.

It is an arithmetic number, because the mean of its divisors is an integer number (2651244).

Almost surely, 2^25998992 is an apocalyptic number.

It is an amenable number.

25998992 is an abundant number, since it is smaller than the sum of its proper divisors (27025888).

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

25998992 is a wasteful number, since it uses less digits than its factorization.

25998992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85550 (or 85544 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 53.

The square root of 25998992 is about 5098.9206701026. The cubic root of 25998992 is about 296.2457783348.

The spelling of 25998992 in words is "twenty-five million, nine hundred ninety-eight thousand, nine hundred ninety-two".