1254513289 has 2 divisors, whose sum is σ = 1254513290. Its totient is φ = 1254513288.

The previous prime is 1254513259. The next prime is 1254513341. The reversal of 1254513289 is 9823154521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672883600 + 581629689 = 25940^2 + 24117^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254513289 - 2⁵ = 1254513257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1254513229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627256644 + 627256645.

It is an arithmetic number, because the mean of its divisors is an integer number (627256645).

Almost surely, 2^1254513289 is an apocalyptic number.

It is an amenable number.

1254513289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254513289 is an equidigital number, since it uses as much as digits as its factorization.

1254513289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The square root of 1254513289 is about 35419.1090938211. The cubic root of 1254513289 is about 1078.5122659552.

The spelling of 1254513289 in words is "one billion, two hundred fifty-four million, five hundred thirteen thousand, two hundred eighty-nine".