252109205 has 16 divisors (see below), whose sum is σ = 319915008. Its totient is φ = 190416000.

The previous prime is 252109189. The next prime is 252109211. The reversal of 252109205 is 502901252.

252109205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252109205 - 2⁴ = 252109189 is a prime.

It is a Duffinian number.

It is a congruent 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, 13481 + ... + 26190.

It is an arithmetic number, because the mean of its divisors is an integer number (19994688).

Almost surely, 2^252109205 is an apocalyptic number.

It is an amenable number.

252109205 is a deficient number, since it is larger than the sum of its proper divisors (67805803).

252109205 is a wasteful number, since it uses less digits than its factorization.

252109205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39748.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 252109205 is about 15877.9471280137. The cubic root of 252109205 is about 631.7271870718.

The spelling of 252109205 in words is "two hundred fifty-two million, one hundred nine thousand, two hundred five".