1225964269 has 2 divisors, whose sum is σ = 1225964270. Its totient is φ = 1225964268.

The previous prime is 1225964237. The next prime is 1225964281. The reversal of 1225964269 is 9624695221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 906913225 + 319051044 = 30115^2 + 17862^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225964269 - 2⁵ = 1225964237 is a prime.

It is a super-2 number, since 2×1225964269² = 3005976777729408722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225964219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612982134 + 612982135.

It is an arithmetic number, because the mean of its divisors is an integer number (612982135).

Almost surely, 2^1225964269 is an apocalyptic number.

It is an amenable number.

1225964269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225964269 is an equidigital number, since it uses as much as digits as its factorization.

1225964269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The square root of 1225964269 is about 35013.7725616649. The cubic root of 1225964269 is about 1070.2681567985.

The spelling of 1225964269 in words is "one billion, two hundred twenty-five million, nine hundred sixty-four thousand, two hundred sixty-nine".