252525813 has 4 divisors (see below), whose sum is σ = 336701088. Its totient is φ = 168350540.

The previous prime is 252525811. The next prime is 252525817. The reversal of 252525813 is 318525252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252525813 - 2¹ = 252525811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252525811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42087633 + ... + 42087638.

It is an arithmetic number, because the mean of its divisors is an integer number (84175272).

Almost surely, 2^252525813 is an apocalyptic number.

It is an amenable number.

252525813 is a deficient number, since it is larger than the sum of its proper divisors (84175275).

252525813 is an equidigital number, since it uses as much as digits as its factorization.

252525813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84175274.

The product of its digits is 24000, while the sum is 33.

The square root of 252525813 is about 15891.0607890097. The cubic root of 252525813 is about 632.0749699093.

The spelling of 252525813 in words is "two hundred fifty-two million, five hundred twenty-five thousand, eight hundred thirteen".