25998742 has 32 divisors (see below), whose sum is σ = 49259520. Its totient is φ = 9996480.

The previous prime is 25998737. The next prime is 25998757. The reversal of 25998742 is 24789952.

It is a junction number, because it is equal to n+sod(n) for n = 25998692 and 25998701.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11098 + ... + 13234.

It is an arithmetic number, because the mean of its divisors is an integer number (1539360).

Almost surely, 2^25998742 is an apocalyptic number.

25998742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25998742 is a deficient number, since it is larger than the sum of its proper divisors (23260778).

25998742 is a wasteful number, since it uses less digits than its factorization.

25998742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236.

The product of its digits is 362880, while the sum is 46.

The square root of 25998742 is about 5098.8961550516. The cubic root of 25998742 is about 296.2448287892.

The spelling of 25998742 in words is "twenty-five million, nine hundred ninety-eight thousand, seven hundred forty-two".