425440117 has 2 divisors, whose sum is σ = 425440118. Its totient is φ = 425440116.

The previous prime is 425440073. The next prime is 425440123. The reversal of 425440117 is 711044524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415792881 + 9647236 = 20391^2 + 3106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425440117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425440417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212720058 + 212720059.

It is an arithmetic number, because the mean of its divisors is an integer number (212720059).

Almost surely, 2^425440117 is an apocalyptic number.

It is an amenable number.

425440117 is a deficient number, since it is larger than the sum of its proper divisors (1).

425440117 is an equidigital number, since it uses as much as digits as its factorization.

425440117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 425440117 is about 20626.1997711648. The cubic root of 425440117 is about 752.1067385883.

The spelling of 425440117 in words is "four hundred twenty-five million, four hundred forty thousand, one hundred seventeen".