252001242511 has 4 divisors (see below), whose sum is σ = 252009011592. Its totient is φ = 251993473432.

The previous prime is 252001242463. The next prime is 252001242523. The reversal of 252001242511 is 115242100252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252001242511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252001242811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3835681 + ... + 3900826.

It is an arithmetic number, because the mean of its divisors is an integer number (63002252898).

Almost surely, 2^252001242511 is an apocalyptic number.

252001242511 is a deficient number, since it is larger than the sum of its proper divisors (7769081).

252001242511 is an equidigital number, since it uses as much as digits as its factorization.

252001242511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7769080.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 252001242511 its reverse (115242100252), we get a palindrome (367243342763).

The spelling of 252001242511 in words is "two hundred fifty-two billion, one million, two hundred forty-two thousand, five hundred eleven".