425520617 has 2 divisors, whose sum is σ = 425520618. Its totient is φ = 425520616.

The previous prime is 425520581. The next prime is 425520629. The reversal of 425520617 is 716025524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284124736 + 141395881 = 16856^2 + 11891^2 .

It is a cyclic number.

It is not a de Polignac number, because 425520617 - 2⁶ = 425520553 is a prime.

It is not a weakly prime, because it can be changed into another prime (425520317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212760308 + 212760309.

It is an arithmetic number, because the mean of its divisors is an integer number (212760309).

Almost surely, 2^425520617 is an apocalyptic number.

It is an amenable number.

425520617 is a deficient number, since it is larger than the sum of its proper divisors (1).

425520617 is an equidigital number, since it uses as much as digits as its factorization.

425520617 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 32.

The square root of 425520617 is about 20628.1510805016. The cubic root of 425520617 is about 752.1541724274.

The spelling of 425520617 in words is "four hundred twenty-five million, five hundred twenty thousand, six hundred seventeen".