12251535500 has 24 divisors (see below), whose sum is σ = 26757354624. Its totient is φ = 4900614000.

The previous prime is 12251535493. The next prime is 12251535523. The reversal of 12251535500 is 553515221.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12251036 + ... + 12252035.

It is an arithmetic number, because the mean of its divisors is an integer number (1114889776).

Almost surely, 2^12251535500 is an apocalyptic number.

12251535500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12251535500 is an abundant number, since it is smaller than the sum of its proper divisors (14505819124).

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

12251535500 is a wasteful number, since it uses less digits than its factorization.

12251535500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24503090 (or 24503078 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 12251535500 in words is "twelve billion, two hundred fifty-one million, five hundred thirty-five thousand, five hundred".