1225145023429 has 2 divisors, whose sum is σ = 1225145023430. Its totient is φ = 1225145023428.

The previous prime is 1225145023391. The next prime is 1225145023631. The reversal of 1225145023429 is 9243205415221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 626226909025 + 598918114404 = 791345^2 + 773898^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225145023429 - 2¹⁷ = 1225144892357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225145023391 and 1225145023400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225145083429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612572511714 + 612572511715.

It is an arithmetic number, because the mean of its divisors is an integer number (612572511715).

Almost surely, 2^{1225145023429} is an apocalyptic number.

It is an amenable number.

1225145023429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225145023429 is an equidigital number, since it uses as much as digits as its factorization.

1225145023429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 1225145023429 in words is "one trillion, two hundred twenty-five billion, one hundred forty-five million, twenty-three thousand, four hundred twenty-nine".