172025243 has 4 divisors (see below), whose sum is σ = 185257968. Its totient is φ = 158792520.

The previous prime is 172025239. The next prime is 172025267. The reversal of 172025243 is 342520271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342520271 = 31 ⋅11049041.

It is a cyclic number.

It is not a de Polignac number, because 172025243 - 2² = 172025239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172025233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6616343 + ... + 6616368.

It is an arithmetic number, because the mean of its divisors is an integer number (46314492).

Almost surely, 2^172025243 is an apocalyptic number.

172025243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

172025243 is a deficient number, since it is larger than the sum of its proper divisors (13232725).

172025243 is a wasteful number, since it uses less digits than its factorization.

172025243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13232724.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 172025243 is about 13115.8393936492. The cubic root of 172025243 is about 556.1569814917.

The spelling of 172025243 in words is "one hundred seventy-two million, twenty-five thousand, two hundred forty-three".