245222222451 has 4 divisors (see below), whose sum is σ = 326962963272. Its totient is φ = 163481481632.

The previous prime is 245222222447. The next prime is 245222222461. The reversal of 245222222451 is 154222222542.

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 245222222451 - 2² = 245222222447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245222222431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40870370406 + ... + 40870370411.

It is an arithmetic number, because the mean of its divisors is an integer number (81740740818).

Almost surely, 2^245222222451 is an apocalyptic number.

245222222451 is a deficient number, since it is larger than the sum of its proper divisors (81740740821).

245222222451 is an equidigital number, since it uses as much as digits as its factorization.

245222222451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81740740820.

The product of its digits is 51200, while the sum is 33.

Adding to 245222222451 its reverse (154222222542), we get a palindrome (399444444993).

Subtracting from 245222222451 its reverse (154222222542), we obtain a palindrome (90999999909).

The spelling of 245222222451 in words is "two hundred forty-five billion, two hundred twenty-two million, two hundred twenty-two thousand, four hundred fifty-one".