4215125 has 8 divisors (see below), whose sum is σ = 5260632. Its totient is φ = 3372000.

The previous prime is 4215103. The next prime is 4215157. The reversal of 4215125 is 5215124.

It can be written as a sum of positive squares in 4 ways, for example, as 1085764 + 3129361 = 1042^2 + 1769^2 .

It is not a de Polignac number, because 4215125 - 2¹² = 4211029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4215097 and 4215106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16736 + ... + 16985.

It is an arithmetic number, because the mean of its divisors is an integer number (657579).

Almost surely, 2^4215125 is an apocalyptic number.

It is an amenable number.

4215125 is a deficient number, since it is larger than the sum of its proper divisors (1045507).

4215125 is an equidigital number, since it uses as much as digits as its factorization.

4215125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33736 (or 33726 counting only the distinct ones).

The product of its digits is 400, while the sum is 20.

The square root of 4215125 is about 2053.0769591031. The cubic root of 4215125 is about 161.5363080415.

Subtracting 4215125 from its reverse (5215124), we obtain a palindrome (999999).

The spelling of 4215125 in words is "four million, two hundred fifteen thousand, one hundred twenty-five".