1625017 has 2 divisors, whose sum is σ = 1625018. Its totient is φ = 1625016.

The previous prime is 1624993. The next prime is 1625021. The reversal of 1625017 is 7105261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1201216 + 423801 = 1096^2 + 651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1625017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1625027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812508 + 812509.

It is an arithmetic number, because the mean of its divisors is an integer number (812509).

2^1625017 is an apocalyptic number.

It is an amenable number.

1625017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625017 is an equidigital number, since it uses as much as digits as its factorization.

1625017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1625017 is about 1274.7615463294. The cubic root of 1625017 is about 117.5671443609.

The spelling of 1625017 in words is "one million, six hundred twenty-five thousand, seventeen".