1225545383 has 2 divisors, whose sum is σ = 1225545384. Its totient is φ = 1225545382.

The previous prime is 1225545331. The next prime is 1225545421. The reversal of 1225545383 is 3835455221.

It is an a-pointer prime, because the next prime (1225545421) can be obtained adding 1225545383 to its sum of digits (38).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225545383 - 2¹⁸ = 1225283239 is a prime.

It is a super-2 number, since 2×1225545383² = 3003922971585233378, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225545313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612772691 + 612772692.

It is an arithmetic number, because the mean of its divisors is an integer number (612772692).

Almost surely, 2^1225545383 is an apocalyptic number.

1225545383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225545383 is an equidigital number, since it uses as much as digits as its factorization.

1225545383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 38.

The square root of 1225545383 is about 35007.7903187276. The cubic root of 1225545383 is about 1070.1462469330.

The spelling of 1225545383 in words is "one billion, two hundred twenty-five million, five hundred forty-five thousand, three hundred eighty-three".