252401145044113 has 4 divisors (see below), whose sum is σ = 271816617739828. Its totient is φ = 232985672348400.

The previous prime is 252401145044101. The next prime is 252401145044119. The reversal of 252401145044113 is 311440541104252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12728854333504 + 239672290710609 = 3567752^2 + 15481353^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252401145044113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252401145044119) 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, 9707736347838 + ... + 9707736347863.

It is an arithmetic number, because the mean of its divisors is an integer number (67954154434957).

Almost surely, 2^{252401145044113} is an apocalyptic number.

It is an amenable number.

252401145044113 is a deficient number, since it is larger than the sum of its proper divisors (19415472695715).

252401145044113 is a wasteful number, since it uses less digits than its factorization.

252401145044113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19415472695714.

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 252401145044113 its reverse (311440541104252), we get a palindrome (563841686148365).

The spelling of 252401145044113 in words is "two hundred fifty-two trillion, four hundred one billion, one hundred forty-five million, forty-four thousand, one hundred thirteen".