245631122251 has 8 divisors (see below), whose sum is σ = 249838064784. Its totient is φ = 241440085920.

The previous prime is 245631122239. The next prime is 245631122273. The reversal of 245631122251 is 152221136542.

It is a happy number.

245631122251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 245631122251 - 2⁹ = 245631121739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245631128251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3945400 + ... + 4007173.

It is an arithmetic number, because the mean of its divisors is an integer number (31229758098).

Almost surely, 2^245631122251 is an apocalyptic number.

245631122251 is a deficient number, since it is larger than the sum of its proper divisors (4206942533).

245631122251 is an equidigital number, since it uses as much as digits as its factorization.

245631122251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7953101.

The product of its digits is 28800, while the sum is 34.

Adding to 245631122251 its reverse (152221136542), we get a palindrome (397852258793).

The spelling of 245631122251 in words is "two hundred forty-five billion, six hundred thirty-one million, one hundred twenty-two thousand, two hundred fifty-one".