12521255302144 has 88 divisors (see below), whose sum is σ = 25810597060416. Its totient is φ = 6067476480000.

The previous prime is 12521255302123. The next prime is 12521255302187. The reversal of 12521255302144 is 44120355212521.

It is a congruent number.

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, 5352039 + ... + 7327129.

Almost surely, 2^{12521255302144} 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 12521255302144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12905298530208).

12521255302144 is an abundant number, since it is smaller than the sum of its proper divisors (13289341758272).

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

12521255302144 is a wasteful number, since it uses less digits than its factorization.

12521255302144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975303 (or 1975285 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 12521255302144 in words is "twelve trillion, five hundred twenty-one billion, two hundred fifty-five million, three hundred two thousand, one hundred forty-four".