252511905 has 8 divisors (see below), whose sum is σ = 404019072. Its totient is φ = 134673008.

The previous prime is 252511901. The next prime is 252511913. The reversal of 252511905 is 509115252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252511905 - 2² = 252511901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252511901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8417049 + ... + 8417078.

It is an arithmetic number, because the mean of its divisors is an integer number (50502384).

Almost surely, 2^252511905 is an apocalyptic number.

It is an amenable number.

252511905 is a deficient number, since it is larger than the sum of its proper divisors (151507167).

252511905 is a wasteful number, since it uses less digits than its factorization.

252511905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16834135.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 252511905 is about 15890.6231784660. The cubic root of 252511905 is about 632.0633657357.

The spelling of 252511905 in words is "two hundred fifty-two million, five hundred eleven thousand, nine hundred five".