1225259863 has 2 divisors, whose sum is σ = 1225259864. Its totient is φ = 1225259862.

The previous prime is 1225259839. The next prime is 1225259869. The reversal of 1225259863 is 3689525221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225259863 - 2²¹ = 1223162711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225259869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612629931 + 612629932.

It is an arithmetic number, because the mean of its divisors is an integer number (612629932).

Almost surely, 2^1225259863 is an apocalyptic number.

1225259863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225259863 is an equidigital number, since it uses as much as digits as its factorization.

1225259863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 43.

The square root of 1225259863 is about 35003.7121317154. The cubic root of 1225259863 is about 1070.0631351223.

The spelling of 1225259863 in words is "one billion, two hundred twenty-five million, two hundred fifty-nine thousand, eight hundred sixty-three".