25938496512 has 154 divisors (see below), whose sum is σ = 77744167508. Its totient is φ = 8645916672.

The previous prime is 25938496511. The next prime is 25938496523. The reversal of 25938496512 is 21569483952.

25938496512 is a `hidden beast` number, since 2 + 5 + 9 + 38 + 4 + 96 + 512 = 666.

It is a super-2 number, since 2×25938496512² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (25938496511) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 729123 + ... + 763869.

Almost surely, 2^25938496512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25938496512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38872083754).

25938496512 is an abundant number, since it is smaller than the sum of its proper divisors (51805670996).

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

25938496512 is an frugal number, since it uses more digits than its factorization.

25938496512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34785 (or 34752 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 25938496512 in words is "twenty-five billion, nine hundred thirty-eight million, four hundred ninety-six thousand, five hundred twelve".