12765052500 has 120 divisors (see below), whose sum is σ = 37278292128. Its totient is φ = 3398640000.

The previous prime is 12765052481. The next prime is 12765052501. The reversal of 12765052500 is 525056721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12765052501) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7656667 + ... + 7658333.

Almost surely, 2^12765052500 is an apocalyptic number.

12765052500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12765052500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18639146064).

12765052500 is an abundant number, since it is smaller than the sum of its proper divisors (24513239628).

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

12765052500 is a wasteful number, since it uses less digits than its factorization.

12765052500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715 (or 2698 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The spelling of 12765052500 in words is "twelve billion, seven hundred sixty-five million, fifty-two thousand, five hundred".