25998613038 has 16 divisors (see below), whose sum is σ = 57774695760. Its totient is φ = 8666204328.

The previous prime is 25998613027. The next prime is 25998613097. The reversal of 25998613038 is 83031689952.

25998613038 is a `hidden beast` number, since 2 + 599 + 8 + 6 + 13 + 0 + 38 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 481455797 = 25998613038 / (2 + 5 + 9 + 9 + 8 + 6 + 1 + 3 + 0 + 3 + 8).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240727845 + ... + 240727952.

It is an arithmetic number, because the mean of its divisors is an integer number (3610918485).

Almost surely, 2^25998613038 is an apocalyptic number.

25998613038 is an abundant number, since it is smaller than the sum of its proper divisors (31776082722).

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

25998613038 is a wasteful number, since it uses less digits than its factorization.

25998613038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481455808 (or 481455802 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 25998613038 in words is "twenty-five billion, nine hundred ninety-eight million, six hundred thirteen thousand, thirty-eight".