252585038690 has 8 divisors (see below), whose sum is σ = 454653069660. Its totient is φ = 101034015472.

The previous prime is 252585038689. The next prime is 252585038707. The reversal of 252585038690 is 96830585252.

It can be written as a sum of positive squares in 2 ways, for example, as 250831690561 + 1753348129 = 500831^2 + 41873^2 .

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

It is a super-2 number, since 2×252585038690² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12629251925 + ... + 12629251944.

Almost surely, 2^252585038690 is an apocalyptic number.

252585038690 is a deficient number, since it is larger than the sum of its proper divisors (202068030970).

252585038690 is a wasteful number, since it uses less digits than its factorization.

252585038690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25258503876.

The product of its (nonzero) digits is 5184000, while the sum is 53.

The spelling of 252585038690 in words is "two hundred fifty-two billion, five hundred eighty-five million, thirty-eight thousand, six hundred ninety".