252423745 has 24 divisors (see below), whose sum is σ = 355886568. Its totient is φ = 171376800.

The previous prime is 252423719. The next prime is 252423751. The reversal of 252423745 is 547324252.

252423745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 131951169 + 120472576 = 11487^2 + 10976^2 .

It is not a de Polignac number, because 252423745 - 2⁵ = 252423713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252423745.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2499195 + ... + 2499295.

It is an arithmetic number, because the mean of its divisors is an integer number (14828607).

Almost surely, 2^252423745 is an apocalyptic number.

It is an amenable number.

252423745 is a deficient number, since it is larger than the sum of its proper divisors (103462823).

252423745 is an frugal number, since it uses more digits than its factorization.

252423745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 113 counting only the distinct ones).

The product of its digits is 67200, while the sum is 34.

The square root of 252423745 is about 15887.8489733507. The cubic root of 252423745 is about 631.9897993133.

Adding to 252423745 its reverse (547324252), we get a palindrome (799747997).

The spelling of 252423745 in words is "two hundred fifty-two million, four hundred twenty-three thousand, seven hundred forty-five".