1225814479 has 2 divisors, whose sum is σ = 1225814480. Its totient is φ = 1225814478.

The previous prime is 1225814441. The next prime is 1225814483. The reversal of 1225814479 is 9744185221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225814479 - 2¹³ = 1225806287 is a prime.

It is a super-2 number, since 2×1225814479² = 3005242273852082882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225844479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612907239 + 612907240.

It is an arithmetic number, because the mean of its divisors is an integer number (612907240).

Almost surely, 2^1225814479 is an apocalyptic number.

1225814479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225814479 is an equidigital number, since it uses as much as digits as its factorization.

1225814479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 1225814479 is about 35011.6334808875. The cubic root of 1225814479 is about 1070.2245660781.

The spelling of 1225814479 in words is "one billion, two hundred twenty-five million, eight hundred fourteen thousand, four hundred seventy-nine".