25306939896 has 64 divisors (see below), whose sum is σ = 73669824000. Its totient is φ = 7094126208.

The previous prime is 25306939811. The next prime is 25306939897. The reversal of 25306939896 is 69893960352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25306939897) 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 15 ways as a sum of consecutive naturals, for example, 1412196 + ... + 1430003.

It is an arithmetic number, because the mean of its divisors is an integer number (1151091000).

Almost surely, 2^25306939896 is an apocalyptic number.

It is an amenable number.

25306939896 is an abundant number, since it is smaller than the sum of its proper divisors (48362884104).

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

25306939896 is a wasteful number, since it uses less digits than its factorization.

25306939896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842268 (or 2842264 counting only the distinct ones).

The product of its (nonzero) digits is 18895680, while the sum is 60.

The spelling of 25306939896 in words is "twenty-five billion, three hundred six million, nine hundred thirty-nine thousand, eight hundred ninety-six".