252204405 has 16 divisors (see below), whose sum is σ = 403812864. Its totient is φ = 134413760.

The previous prime is 252204389. The next prime is 252204427. The reversal of 252204405 is 504402252.

It is a happy number.

252204405 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 252204405 - 2⁴ = 252204389 is a prime.

It is a Curzon 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, 19420 + ... + 29690.

It is an arithmetic number, because the mean of its divisors is an integer number (25238304).

Almost surely, 2^252204405 is an apocalyptic number.

It is an amenable number.

252204405 is a deficient number, since it is larger than the sum of its proper divisors (151608459).

252204405 is a wasteful number, since it uses less digits than its factorization.

252204405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11916.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 252204405 is about 15880.9447137127. The cubic root of 252204405 is about 631.8066934374.

Adding to 252204405 its reverse (504402252), we get a palindrome (756606657).

The spelling of 252204405 in words is "two hundred fifty-two million, two hundred four thousand, four hundred five".