1254224581 has 2 divisors, whose sum is σ = 1254224582. Its totient is φ = 1254224580.

The previous prime is 1254224501. The next prime is 1254224591. The reversal of 1254224581 is 1854224521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1173062500 + 81162081 = 34250^2 + 9009^2 .

It is an emirp because it is prime and its reverse (1854224521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1254224581 - 2¹⁷ = 1254093509 is a prime.

It is a super-2 number, since 2×1254224581² = 3146158599169251122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254224501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627112290 + 627112291.

It is an arithmetic number, because the mean of its divisors is an integer number (627112291).

Almost surely, 2^1254224581 is an apocalyptic number.

It is an amenable number.

1254224581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254224581 is an equidigital number, since it uses as much as digits as its factorization.

1254224581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25600, while the sum is 34.

The square root of 1254224581 is about 35415.0332627262. The cubic root of 1254224581 is about 1078.4295249668.

The spelling of 1254224581 in words is "one billion, two hundred fifty-four million, two hundred twenty-four thousand, five hundred eighty-one".