1225460672749 has 2 divisors, whose sum is σ = 1225460672750. Its totient is φ = 1225460672748.

The previous prime is 1225460672713. The next prime is 1225460672753. The reversal of 1225460672749 is 9472760645221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1069790970249 + 155669702500 = 1034307^2 + 394550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225460672749 - 2¹⁵ = 1225460639981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1225460672749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225460672549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612730336374 + 612730336375.

It is an arithmetic number, because the mean of its divisors is an integer number (612730336375).

Almost surely, 2^{1225460672749} is an apocalyptic number.

It is an amenable number.

1225460672749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225460672749 is an equidigital number, since it uses as much as digits as its factorization.

1225460672749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 1225460672749 in words is "one trillion, two hundred twenty-five billion, four hundred sixty million, six hundred seventy-two thousand, seven hundred forty-nine".