1205425237 has 2 divisors, whose sum is σ = 1205425238. Its totient is φ = 1205425236.

The previous prime is 1205425229. The next prime is 1205425279. The reversal of 1205425237 is 7325245021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 950735556 + 254689681 = 30834^2 + 15959^2 .

It is a cyclic number.

It is not a de Polignac number, because 1205425237 - 2³ = 1205425229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1205425199 and 1205425208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205422237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602712618 + 602712619.

It is an arithmetic number, because the mean of its divisors is an integer number (602712619).

Almost surely, 2^1205425237 is an apocalyptic number.

It is an amenable number.

1205425237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205425237 is an equidigital number, since it uses as much as digits as its factorization.

1205425237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 1205425237 is about 34719.2343953607. The cubic root of 1205425237 is about 1064.2575992290.

The spelling of 1205425237 in words is "one billion, two hundred five million, four hundred twenty-five thousand, two hundred thirty-seven".