1252314553145 has 4 divisors (see below), whose sum is σ = 1502777463780. Its totient is φ = 1001851642512.

The previous prime is 1252314553141. The next prime is 1252314553177. The reversal of 1252314553145 is 5413554132521.

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 910491914809 + 341822638336 = 954197^2 + 584656^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252314553145 - 2² = 1252314553141 is a prime.

It is a super-2 number, since 2×1252314553145² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1252314553141) 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, 125231455310 + ... + 125231455319.

It is an arithmetic number, because the mean of its divisors is an integer number (375694365945).

Almost surely, 2^{1252314553145} is an apocalyptic number.

It is an amenable number.

1252314553145 is a deficient number, since it is larger than the sum of its proper divisors (250462910635).

1252314553145 is an equidigital number, since it uses as much as digits as its factorization.

1252314553145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250462910634.

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

Adding to 1252314553145 its reverse (5413554132521), we get a palindrome (6665868685666).

The spelling of 1252314553145 in words is "one trillion, two hundred fifty-two billion, three hundred fourteen million, five hundred fifty-three thousand, one hundred forty-five".