251241012223 has 4 divisors (see below), whose sum is σ = 251242905760. Its totient is φ = 251239118688.

The previous prime is 251241012167. The next prime is 251241012229. The reversal of 251241012223 is 322210142152.

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

It is a cyclic number.

It is not a de Polignac number, because 251241012223 - 2⁹ = 251241011711 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 (251241012229) 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, 731415 + ... + 1018552.

It is an arithmetic number, because the mean of its divisors is an integer number (62810726440).

Almost surely, 2^251241012223 is an apocalyptic number.

251241012223 is a deficient number, since it is larger than the sum of its proper divisors (1893537).

251241012223 is a wasteful number, since it uses less digits than its factorization.

251241012223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893536.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 251241012223 its reverse (322210142152), we get a palindrome (573451154375).

The spelling of 251241012223 in words is "two hundred fifty-one billion, two hundred forty-one million, twelve thousand, two hundred twenty-three".