252521324403 has 16 divisors (see below), whose sum is σ = 340319448480. Its totient is φ = 166544741376.

The previous prime is 252521324371. The next prime is 252521324467. The reversal of 252521324403 is 304423125252.

It is not a de Polignac number, because 252521324403 - 2⁵ = 252521324371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252521424403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062750 + ... + 1278467.

It is an arithmetic number, because the mean of its divisors is an integer number (21269965530).

Almost surely, 2^252521324403 is an apocalyptic number.

252521324403 is a deficient number, since it is larger than the sum of its proper divisors (87798124077).

252521324403 is a wasteful number, since it uses less digits than its factorization.

252521324403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341606.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 252521324403 its reverse (304423125252), we get a palindrome (556944449655).

The spelling of 252521324403 in words is "two hundred fifty-two billion, five hundred twenty-one million, three hundred twenty-four thousand, four hundred three".