25769918136 has 16 divisors (see below), whose sum is σ = 64424795400. Its totient is φ = 8589972704.

The previous prime is 25769918113. The next prime is 25769918137. The reversal of 25769918136 is 63181996752.

It is a super-2 number, since 2×25769918136² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25769918137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536873271 + ... + 536873318.

Almost surely, 2^25769918136 is an apocalyptic number.

It is an amenable number.

25769918136 is an abundant number, since it is smaller than the sum of its proper divisors (38654877264).

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

25769918136 is a wasteful number, since it uses less digits than its factorization.

25769918136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073746598 (or 1073746594 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 57.

The spelling of 25769918136 in words is "twenty-five billion, seven hundred sixty-nine million, nine hundred eighteen thousand, one hundred thirty-six".