425210173 has 2 divisors, whose sum is σ = 425210174. Its totient is φ = 425210172.

The previous prime is 425210147. The next prime is 425210243. The reversal of 425210173 is 371012524.

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., 400080004 + 25130169 = 20002^2 + 5013^2 .

It is a cyclic number.

It is not a de Polignac number, because 425210173 - 2⁵ = 425210141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425210143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212605086 + 212605087.

It is an arithmetic number, because the mean of its divisors is an integer number (212605087).

Almost surely, 2^425210173 is an apocalyptic number.

It is an amenable number.

425210173 is a deficient number, since it is larger than the sum of its proper divisors (1).

425210173 is an equidigital number, since it uses as much as digits as its factorization.

425210173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 425210173 is about 20620.6249420332. The cubic root of 425210173 is about 751.9712133663.

Adding to 425210173 its reverse (371012524), we get a palindrome (796222697).

The spelling of 425210173 in words is "four hundred twenty-five million, two hundred ten thousand, one hundred seventy-three".