1254422861 has 2 divisors, whose sum is σ = 1254422862. Its totient is φ = 1254422860.

The previous prime is 1254422833. The next prime is 1254422863. The reversal of 1254422861 is 1682244521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1135285636 + 119137225 = 33694^2 + 10915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254422861 - 2⁶ = 1254422797 is a prime.

Together with 1254422863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254422863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627211430 + 627211431.

It is an arithmetic number, because the mean of its divisors is an integer number (627211431).

Almost surely, 2^1254422861 is an apocalyptic number.

It is an amenable number.

1254422861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254422861 is an equidigital number, since it uses as much as digits as its factorization.

1254422861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30720, while the sum is 35.

The square root of 1254422861 is about 35417.8325282618. The cubic root of 1254422861 is about 1078.4863515092.

The spelling of 1254422861 in words is "one billion, two hundred fifty-four million, four hundred twenty-two thousand, eight hundred sixty-one".