1290725333 has 2 divisors, whose sum is σ = 1290725334. Its totient is φ = 1290725332.

The previous prime is 1290725329. The next prime is 1290725341. The reversal of 1290725333 is 3335270921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1201176964 + 89548369 = 34658^2 + 9463^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290725333 - 2² = 1290725329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1290725293 and 1290725302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1290725383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645362666 + 645362667.

It is an arithmetic number, because the mean of its divisors is an integer number (645362667).

Almost surely, 2^1290725333 is an apocalyptic number.

It is an amenable number.

1290725333 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290725333 is an equidigital number, since it uses as much as digits as its factorization.

1290725333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 35.

The square root of 1290725333 is about 35926.6660434836. Note that the first 3 decimals coincide. The cubic root of 1290725333 is about 1088.7912231950.

The spelling of 1290725333 in words is "one billion, two hundred ninety million, seven hundred twenty-five thousand, three hundred thirty-three".