252145015533 has 8 divisors (see below), whose sum is σ = 373548171200. Its totient is φ = 168096677004.

The previous prime is 252145015531. The next prime is 252145015559. The reversal of 252145015533 is 335510541252.

252145015533 is a `hidden beast` number, since 2 + 5 + 21 + 450 + 155 + 33 = 666.

It is not a de Polignac number, because 252145015533 - 2¹ = 252145015531 is a prime.

It is a super-2 number, since 2×252145015533² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252145015531) 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, 4669352113 + ... + 4669352166.

It is an arithmetic number, because the mean of its divisors is an integer number (46693521400).

Almost surely, 2^252145015533 is an apocalyptic number.

It is an amenable number.

252145015533 is a deficient number, since it is larger than the sum of its proper divisors (121403155667).

252145015533 is an equidigital number, since it uses as much as digits as its factorization.

252145015533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9338704288 (or 9338704282 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 252145015533 its reverse (335510541252), we get a palindrome (587655556785).

The spelling of 252145015533 in words is "two hundred fifty-two billion, one hundred forty-five million, fifteen thousand, five hundred thirty-three".