168226425 has 18 divisors (see below), whose sum is σ = 301312622. Its totient is φ = 89720640.

The previous prime is 168226423. The next prime is 168226433. The reversal of 168226425 is 524622861.

It is a happy number.

168226425 is a `hidden beast` number, since 1 + 6 + 8 + 2 + 2 + 642 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 8785296 + 159441129 = 2964^2 + 12627^2 .

It is not a de Polignac number, because 168226425 - 2¹ = 168226423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 168226425.

It is not an unprimeable number, because it can be changed into a prime (168226423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 373612 + ... + 374061.

Almost surely, 2^168226425 is an apocalyptic number.

168226425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168226425 is a deficient number, since it is larger than the sum of its proper divisors (133086197).

168226425 is a wasteful number, since it uses less digits than its factorization.

168226425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747689 (or 747681 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 168226425 is about 12970.2129897701. The cubic root of 168226425 is about 552.0326166140.

The spelling of 168226425 in words is "one hundred sixty-eight million, two hundred twenty-six thousand, four hundred twenty-five".