172225775 has 6 divisors (see below), whose sum is σ = 213559992. Its totient is φ = 137780600.

The previous prime is 172225763. The next prime is 172225811. The reversal of 172225775 is 577522271.

It is not a de Polignac number, because 172225775 - 2²² = 168031471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3444491 + ... + 3444540.

It is an arithmetic number, because the mean of its divisors is an integer number (35593332).

Almost surely, 2^172225775 is an apocalyptic number.

172225775 is a deficient number, since it is larger than the sum of its proper divisors (41334217).

172225775 is an equidigital number, since it uses as much as digits as its factorization.

172225775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6889041 (or 6889036 counting only the distinct ones).

The product of its digits is 68600, while the sum is 38.

The square root of 172225775 is about 13123.4818169570. The cubic root of 172225775 is about 556.3730039810.

The spelling of 172225775 in words is "one hundred seventy-two million, two hundred twenty-five thousand, seven hundred seventy-five".