25981802 has 16 divisors (see below), whose sum is σ = 48589632. Its totient is φ = 10122720.

The previous prime is 25981801. The next prime is 25981841. The reversal of 25981802 is 20818952.

It is not an unprimeable number, because it can be changed into a prime (25981801) 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 7 ways as a sum of consecutive naturals, for example, 84203 + ... + 84510.

It is an arithmetic number, because the mean of its divisors is an integer number (3036852).

Almost surely, 2^25981802 is an apocalyptic number.

25981802 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25981802 is a deficient number, since it is larger than the sum of its proper divisors (22607830).

25981802 is a wasteful number, since it uses less digits than its factorization.

25981802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168733.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 25981802 is about 5097.2347405235. The cubic root of 25981802 is about 296.1804733967.

The spelling of 25981802 in words is "twenty-five million, nine hundred eighty-one thousand, eight hundred two".