425039249 has 2 divisors, whose sum is σ = 425039250. Its totient is φ = 425039248.

The previous prime is 425039243. The next prime is 425039257. The reversal of 425039249 is 942930524.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379003024 + 46036225 = 19468^2 + 6785^2 .

It is a cyclic number.

It is not a de Polignac number, because 425039249 - 2¹⁶ = 424973713 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (425039243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212519624 + 212519625.

It is an arithmetic number, because the mean of its divisors is an integer number (212519625).

Almost surely, 2^425039249 is an apocalyptic number.

It is an amenable number.

425039249 is a deficient number, since it is larger than the sum of its proper divisors (1).

425039249 is an equidigital number, since it uses as much as digits as its factorization.

425039249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 425039249 is about 20616.4800341862. The cubic root of 425039249 is about 751.8704419035.

The spelling of 425039249 in words is "four hundred twenty-five million, thirty-nine thousand, two hundred forty-nine".