1225964237 has 2 divisors, whose sum is σ = 1225964238. Its totient is φ = 1225964236.

The previous prime is 1225964219. The next prime is 1225964269. The reversal of 1225964237 is 7324695221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 870604036 + 355360201 = 29506^2 + 18851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225964237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225964194 and 1225964203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225964287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612982118 + 612982119.

It is an arithmetic number, because the mean of its divisors is an integer number (612982119).

Almost surely, 2^1225964237 is an apocalyptic number.

It is an amenable number.

1225964237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225964237 is an equidigital number, since it uses as much as digits as its factorization.

1225964237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 1225964237 is about 35013.7721047019. The cubic root of 1225964237 is about 1070.2681474865.

The spelling of 1225964237 in words is "one billion, two hundred twenty-five million, nine hundred sixty-four thousand, two hundred thirty-seven".