12501255526620 has 96 divisors (see below), whose sum is σ = 41383466611200. Its totient is φ = 2758897768704.

The previous prime is 12501255526603. The next prime is 12501255526633. The reversal of 12501255526620 is 2662555210521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 513175650 + ... + 513200009.

It is an arithmetic number, because the mean of its divisors is an integer number (431077777200).

Almost surely, 2^{12501255526620} is an apocalyptic number.

12501255526620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12501255526620 is an abundant number, since it is smaller than the sum of its proper divisors (28882211084580).

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

12501255526620 is a wasteful number, since it uses less digits than its factorization.

12501255526620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026375707 (or 1026375705 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 12501255526620 in words is "twelve trillion, five hundred one billion, two hundred fifty-five million, five hundred twenty-six thousand, six hundred twenty".