252645105 has 16 divisors (see below), whose sum is σ = 407943360. Its totient is φ = 133507008.

The previous prime is 252645091. The next prime is 252645121. The reversal of 252645105 is 501546252.

It is not a de Polignac number, because 252645105 - 2¹⁰ = 252644081 is a prime.

It is a super-2 number, since 2×252645105² = 127659098160922050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75627 + ... + 78896.

It is an arithmetic number, because the mean of its divisors is an integer number (25496460).

Almost surely, 2^252645105 is an apocalyptic number.

It is an amenable number.

252645105 is a deficient number, since it is larger than the sum of its proper divisors (155298255).

252645105 is a wasteful number, since it uses less digits than its factorization.

252645105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154640.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 252645105 is about 15894.8137768267. The cubic root of 252645105 is about 632.1744839833.

The spelling of 252645105 in words is "two hundred fifty-two million, six hundred forty-five thousand, one hundred five".