252750002645 has 24 divisors (see below), whose sum is σ = 348164784384. Its totient is φ = 172549557216.

The previous prime is 252750002641. The next prime is 252750002647. The reversal of 252750002645 is 546200057252.

It is a happy number.

It is not a de Polignac number, because 252750002645 - 2² = 252750002641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 252750002599 and 252750002608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252750002641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1733444 + ... + 1873586.

It is an arithmetic number, because the mean of its divisors is an integer number (14506866016).

Almost surely, 2^252750002645 is an apocalyptic number.

It is an amenable number.

252750002645 is a deficient number, since it is larger than the sum of its proper divisors (95414781739).

252750002645 is an equidigital number, since it uses as much as digits as its factorization.

252750002645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140609 (or 140382 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 38.

Adding to 252750002645 its reverse (546200057252), we get a palindrome (798950059897).

The spelling of 252750002645 in words is "two hundred fifty-two billion, seven hundred fifty million, two thousand, six hundred forty-five".