252444725 has 12 divisors (see below), whose sum is σ = 337111236. Its totient is φ = 186420480.

The previous prime is 252444721. The next prime is 252444727. The reversal of 252444725 is 527444252.

It can be written as a sum of positive squares in 6 ways, for example, as 100440484 + 152004241 = 10022^2 + 12329^2 .

It is not a de Polignac number, because 252444725 - 2² = 252444721 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252444721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388052 + ... + 388701.

It is an arithmetic number, because the mean of its divisors is an integer number (28092603).

Almost surely, 2^252444725 is an apocalyptic number.

252444725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

252444725 is a deficient number, since it is larger than the sum of its proper divisors (84666511).

252444725 is a wasteful number, since it uses less digits than its factorization.

252444725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776776 (or 776771 counting only the distinct ones).

The product of its digits is 89600, while the sum is 35.

The square root of 252444725 is about 15888.5092126354. The cubic root of 252444725 is about 632.0073079391.

Adding to 252444725 its reverse (527444252), we get a palindrome (779888977).

The spelling of 252444725 in words is "two hundred fifty-two million, four hundred forty-four thousand, seven hundred twenty-five".