254402215222 has 4 divisors (see below), whose sum is σ = 381603322836. Its totient is φ = 127201107610.

The previous prime is 254402215211. The next prime is 254402215237. The reversal of 254402215222 is 222512204452.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63600553804 + ... + 63600553807.

It is an arithmetic number, because the mean of its divisors is an integer number (95400830709).

Almost surely, 2^254402215222 is an apocalyptic number.

254402215222 is a deficient number, since it is larger than the sum of its proper divisors (127201107614).

254402215222 is a wasteful number, since it uses less digits than its factorization.

254402215222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127201107613.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 254402215222 its reverse (222512204452), we get a palindrome (476914419674).

The spelling of 254402215222 in words is "two hundred fifty-four billion, four hundred two million, two hundred fifteen thousand, two hundred twenty-two".