25948936816 has 40 divisors (see below), whose sum is σ = 58072894704. Its totient is φ = 11101148160.

The previous prime is 25948936813. The next prime is 25948936837. The reversal of 25948936816 is 61863984952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25948936813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4333395 + ... + 4339378.

Almost surely, 2^25948936816 is an apocalyptic number.

It is an amenable number.

25948936816 is an abundant number, since it is smaller than the sum of its proper divisors (32123957888).

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

25948936816 is a wasteful number, since it uses less digits than its factorization.

25948936816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8672809 (or 8672803 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 61.

The spelling of 25948936816 in words is "twenty-five billion, nine hundred forty-eight million, nine hundred thirty-six thousand, eight hundred sixteen".