425164185 has 12 divisors (see below), whose sum is σ = 736951332. Its totient is φ = 226754208.

The previous prime is 425164171. The next prime is 425164193. The reversal of 425164185 is 581461524.

It is a happy number.

425164185 is a `hidden beast` number, since 4 + 2 + 5 + 1 + 641 + 8 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 50509449 + 374654736 = 7107^2 + 19356^2 .

It is a de Polignac number, because none of the positive numbers 2^k-425164185 is a prime.

It is a super-3 number, since 3×425164185³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4724002 + ... + 4724091.

It is an arithmetic number, because the mean of its divisors is an integer number (61412611).

Almost surely, 2^425164185 is an apocalyptic number.

425164185 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

425164185 is a deficient number, since it is larger than the sum of its proper divisors (311787147).

425164185 is a wasteful number, since it uses less digits than its factorization.

425164185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9448104 (or 9448101 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 425164185 is about 20619.5098147361. The cubic root of 425164185 is about 751.9441029308.

The spelling of 425164185 in words is "four hundred twenty-five million, one hundred sixty-four thousand, one hundred eighty-five".