252405105 has 32 divisors (see below), whose sum is σ = 425558016. Its totient is φ = 127495104.

The previous prime is 252405091. The next prime is 252405199. The reversal of 252405105 is 501504252.

It is a happy number.

It is not a de Polignac number, because 252405105 - 2⁴ = 252405089 is a prime.

It is a super-2 number, since 2×252405105² = 127416674060122050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31984 + ... + 39086.

It is an arithmetic number, because the mean of its divisors is an integer number (13298688).

Almost surely, 2^252405105 is an apocalyptic number.

It is an amenable number.

252405105 is a deficient number, since it is larger than the sum of its proper divisors (173152911).

252405105 is a wasteful number, since it uses less digits than its factorization.

252405105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7237.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 252405105 is about 15887.2623507010. The cubic root of 252405105 is about 631.9742426946.

Adding to 252405105 its reverse (501504252), we get a palindrome (753909357).

The spelling of 252405105 in words is "two hundred fifty-two million, four hundred five thousand, one hundred five".