425447111 has 2 divisors, whose sum is σ = 425447112. Its totient is φ = 425447110.

The previous prime is 425447093. The next prime is 425447159. The reversal of 425447111 is 111744524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425447111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425447161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212723555 + 212723556.

It is an arithmetic number, because the mean of its divisors is an integer number (212723556).

Almost surely, 2^425447111 is an apocalyptic number.

425447111 is a deficient number, since it is larger than the sum of its proper divisors (1).

425447111 is an equidigital number, since it uses as much as digits as its factorization.

425447111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 29.

The square root of 425447111 is about 20626.3693121208. The cubic root of 425447111 is about 752.1108599718.

The spelling of 425447111 in words is "four hundred twenty-five million, four hundred forty-seven thousand, one hundred eleven".