12552501788401 has 3 divisors (see below), whose sum is σ = 12552505331353. Its totient is φ = 12552498245450.

The previous prime is 12552501788357. The next prime is 12552501788447. The reversal of 12552501788401 is 10488710525521.

The square root of 12552501788401 is 3542951.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 12552501788401 - 2¹³ = 12552501780209 is a prime.

It is a super-2 number, since 2×12552501788401² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12552501785401) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1771476 + ... + 5314426.

Almost surely, 2^{12552501788401} is an apocalyptic number.

12552501788401 is the 3542951-st square number.

12552501788401 is the 1771476-th centered octagonal number.

It is an amenable number.

12552501788401 is a deficient number, since it is larger than the sum of its proper divisors (3542952).

12552501788401 is an frugal number, since it uses more digits than its factorization.

12552501788401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7085902 (or 3542951 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 49.

Multiplying 12552501788401 by its sum of digits (49), we get a square (615072587631649 = 24800657²).

The spelling of 12552501788401 in words is "twelve trillion, five hundred fifty-two billion, five hundred one million, seven hundred eighty-eight thousand, four hundred one".