1225067839 has 2 divisors, whose sum is σ = 1225067840. Its totient is φ = 1225067838.

The previous prime is 1225067803. The next prime is 1225067849. The reversal of 1225067839 is 9387605221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225067839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225067795 and 1225067804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225067849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612533919 + 612533920.

It is an arithmetic number, because the mean of its divisors is an integer number (612533920).

Almost surely, 2^1225067839 is an apocalyptic number.

1225067839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225067839 is an equidigital number, since it uses as much as digits as its factorization.

1225067839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 1225067839 is about 35000.9691151545. The cubic root of 1225067839 is about 1070.0072317326.

It can be divided in two parts, 12250 and 67839, that added together give a square (80089 = 283²).

The spelling of 1225067839 in words is "one billion, two hundred twenty-five million, sixty-seven thousand, eight hundred thirty-nine".