1454221225778 has 4 divisors (see below), whose sum is σ = 2181331838670. Its totient is φ = 727110612888.

The previous prime is 1454221225763. The next prime is 1454221225829. The reversal of 1454221225778 is 8775221224541.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1417354537729 + 36866688049 = 1190527^2 + 192007^2 .

It is a super-2 number, since 2×1454221225778² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363555306443 + ... + 363555306446.

Almost surely, 2^{1454221225778} is an apocalyptic number.

1454221225778 is a deficient number, since it is larger than the sum of its proper divisors (727110612892).

1454221225778 is an equidigital number, since it uses as much as digits as its factorization.

1454221225778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727110612891.

The product of its digits is 2508800, while the sum is 50.

The spelling of 1454221225778 in words is "one trillion, four hundred fifty-four billion, two hundred twenty-one million, two hundred twenty-five thousand, seven hundred seventy-eight".