1252164612521 has 8 divisors (see below), whose sum is σ = 1395601426080. Its totient is φ = 1116481140288.

The previous prime is 1252164612509. The next prime is 1252164612557.

1252164612521 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1252164612521 - 2¹⁸ = 1252164350377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252164615521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1938334991 + ... + 1938335636.

It is an arithmetic number, because the mean of its divisors is an integer number (174450178260).

Almost surely, 2^{1252164612521} is an apocalyptic number.

It is an amenable number.

1252164612521 is a deficient number, since it is larger than the sum of its proper divisors (143436813559).

1252164612521 is a wasteful number, since it uses less digits than its factorization.

1252164612521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876670663.

The product of its digits is 57600, while the sum is 38.

The spelling of 1252164612521 in words is "one trillion, two hundred fifty-two billion, one hundred sixty-four million, six hundred twelve thousand, five hundred twenty-one".