25285320838 has 8 divisors (see below), whose sum is σ = 40159039032. Its totient is φ = 11898974496.

The previous prime is 25285320833. The next prime is 25285320941. The reversal of 25285320838 is 83802358252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25285320833) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 371842920 + ... + 371842987.

It is an arithmetic number, because the mean of its divisors is an integer number (5019879879).

Almost surely, 2^25285320838 is an apocalyptic number.

25285320838 is a deficient number, since it is larger than the sum of its proper divisors (14873718194).

25285320838 is a wasteful number, since it uses less digits than its factorization.

25285320838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743685926.

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 25285320838 in words is "twenty-five billion, two hundred eighty-five million, three hundred twenty thousand, eight hundred thirty-eight".