25393332785 has 32 divisors (see below), whose sum is σ = 31887060480. Its totient is φ = 19388678400.

The previous prime is 25393332779. The next prime is 25393332793. The reversal of 25393332785 is 58723339352.

It is a de Polignac number, because none of the positive numbers 2^k-25393332785 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 31 ways as a sum of consecutive naturals, for example, 5145179 + ... + 5150111.

It is an arithmetic number, because the mean of its divisors is an integer number (996470640).

Almost surely, 2^25393332785 is an apocalyptic number.

It is an amenable number.

25393332785 is a deficient number, since it is larger than the sum of its proper divisors (6493727695).

25393332785 is a wasteful number, since it uses less digits than its factorization.

25393332785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369.

The product of its digits is 4082400, while the sum is 50.

The spelling of 25393332785 in words is "twenty-five billion, three hundred ninety-three million, three hundred thirty-two thousand, seven hundred eighty-five".