425861173 has 4 divisors (see below), whose sum is σ = 430646220. Its totient is φ = 421076128.

The previous prime is 425861153. The next prime is 425861209. The reversal of 425861173 is 371168524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39463524 + 386397649 = 6282^2 + 19657^2 .

It is a cyclic number.

It is not a de Polignac number, because 425861173 - 2²¹ = 423764021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425861153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2392390 + ... + 2392567.

It is an arithmetic number, because the mean of its divisors is an integer number (107661555).

Almost surely, 2^425861173 is an apocalyptic number.

It is an amenable number.

425861173 is a deficient number, since it is larger than the sum of its proper divisors (4785047).

425861173 is an equidigital number, since it uses as much as digits as its factorization.

425861173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785046.

The product of its digits is 40320, while the sum is 37.

The square root of 425861173 is about 20636.4040714462. The cubic root of 425861173 is about 752.3547755644.

The spelling of 425861173 in words is "four hundred twenty-five million, eight hundred sixty-one thousand, one hundred seventy-three".