4129025 has 6 divisors (see below), whose sum is σ = 5120022. Its totient is φ = 3303200.

The previous prime is 4129007. The next prime is 4129031. The reversal of 4129025 is 5209214.

It is a Cunningham number, because it is equal to 2032²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1 + 4129024 = 1^2 + 2032^2 .

It is not a de Polignac number, because 4129025 - 2¹² = 4124929 is a prime.

It is a Duffinian number.

It is a Curzon 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, 82556 + ... + 82605.

It is an arithmetic number, because the mean of its divisors is an integer number (853337).

Almost surely, 2^4129025 is an apocalyptic number.

It is an amenable number.

4129025 is a deficient number, since it is larger than the sum of its proper divisors (990997).

4129025 is a wasteful number, since it uses less digits than its factorization.

4129025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165171 (or 165166 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 4129025 is about 2032.0002460630. Note that the first 3 decimals coincide. The cubic root of 4129025 is about 160.4288624749.

The spelling of 4129025 in words is "four million, one hundred twenty-nine thousand, twenty-five".