425349997 has 2 divisors, whose sum is σ = 425349998. Its totient is φ = 425349996.

The previous prime is 425349943. The next prime is 425350007. The reversal of 425349997 is 799943524.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348419556 + 76930441 = 18666^2 + 8771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425349997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425349907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212674998 + 212674999.

It is an arithmetic number, because the mean of its divisors is an integer number (212674999).

Almost surely, 2^425349997 is an apocalyptic number.

It is an amenable number.

425349997 is a deficient number, since it is larger than the sum of its proper divisors (1).

425349997 is an equidigital number, since it uses as much as digits as its factorization.

425349997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 52.

The square root of 425349997 is about 20624.0150552699. The cubic root of 425349997 is about 752.0536291588.

The spelling of 425349997 in words is "four hundred twenty-five million, three hundred forty-nine thousand, nine hundred ninety-seven".