252225081 has 6 divisors (see below), whose sum is σ = 364325130. Its totient is φ = 168150048.

The previous prime is 252225067. The next prime is 252225097. The reversal of 252225081 is 180522252.

It can be written as a sum of positive squares in only one way, i.e., 219632400 + 32592681 = 14820^2 + 5709^2 .

It is not a de Polignac number, because 252225081 - 2⁷ = 252224953 is a prime.

It is a super-2 number, since 2×252225081² = 127234982970913122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252225031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14012496 + ... + 14012513.

It is an arithmetic number, because the mean of its divisors is an integer number (60720855).

Almost surely, 2^252225081 is an apocalyptic number.

It is an amenable number.

252225081 is a deficient number, since it is larger than the sum of its proper divisors (112100049).

252225081 is a wasteful number, since it uses less digits than its factorization.

252225081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28025015 (or 28025012 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 252225081 is about 15881.5956692015. The cubic root of 252225081 is about 631.8239583727.

It can be divided in two parts, 25222 and 5081, that added together give a palindrome (30303).

The spelling of 252225081 in words is "two hundred fifty-two million, two hundred twenty-five thousand, eighty-one".