13253255241521 has 4 divisors (see below), whose sum is σ = 13253628219492. Its totient is φ = 13252882263552.

The previous prime is 13253255241511. The next prime is 13253255241559. The reversal of 13253255241521 is 12514255235231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5293860103921 + 7959395137600 = 2300839^2 + 2821240^2 .

It is a cyclic number.

It is not a de Polignac number, because 13253255241521 - 2²² = 13253251047217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13253255241511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186435680 + ... + 186506753.

It is an arithmetic number, because the mean of its divisors is an integer number (3313407054873).

Almost surely, 2^{13253255241521} is an apocalyptic number.

It is an amenable number.

13253255241521 is a deficient number, since it is larger than the sum of its proper divisors (372977971).

13253255241521 is an equidigital number, since it uses as much as digits as its factorization.

13253255241521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372977970.

The product of its digits is 360000, while the sum is 41.

The spelling of 13253255241521 in words is "thirteen trillion, two hundred fifty-three billion, two hundred fifty-five million, two hundred forty-one thousand, five hundred twenty-one".