1225125533 has 2 divisors, whose sum is σ = 1225125534. Its totient is φ = 1225125532.

The previous prime is 1225125523. The next prime is 1225125589. The reversal of 1225125533 is 3355215221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1142642809 + 82482724 = 33803^2 + 9082^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225125533 - 2¹⁸ = 1224863389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225125496 and 1225125505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225125523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612562766 + 612562767.

It is an arithmetic number, because the mean of its divisors is an integer number (612562767).

Almost surely, 2^1225125533 is an apocalyptic number.

It is an amenable number.

1225125533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225125533 is an equidigital number, since it uses as much as digits as its factorization.

1225125533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 29.

The square root of 1225125533 is about 35001.7932826305. The cubic root of 1225125533 is about 1070.0240286332.

The spelling of 1225125533 in words is "one billion, two hundred twenty-five million, one hundred twenty-five thousand, five hundred thirty-three".