4172725 has 6 divisors (see below), whose sum is σ = 5174210. Its totient is φ = 3338160.

The previous prime is 4172719. The next prime is 4172731. The reversal of 4172725 is 5272714.

It is an interprime number because it is at equal distance from previous prime (4172719) and next prime (4172731).

It can be written as a sum of positive squares in 3 ways, for example, as 264196 + 3908529 = 514^2 + 1977^2 .

It is not a de Polignac number, because 4172725 - 2³ = 4172717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4172693 and 4172702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83430 + ... + 83479.

Almost surely, 2^4172725 is an apocalyptic number.

It is an amenable number.

4172725 is a deficient number, since it is larger than the sum of its proper divisors (1001485).

4172725 is a wasteful number, since it uses less digits than its factorization.

4172725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166919 (or 166914 counting only the distinct ones).

The product of its digits is 3920, while the sum is 28.

The square root of 4172725 is about 2042.7248958193. The cubic root of 4172725 is about 160.9928497525.

It can be divided in two parts, 4 and 172725, that multiplied together give a triangular number (690900 = T₁₁₇₅).

The spelling of 4172725 in words is "four million, one hundred seventy-two thousand, seven hundred twenty-five".