4045125 has 64 divisors (see below), whose sum is σ = 8146944. Its totient is φ = 1742400.

The previous prime is 4045121. The next prime is 4045127. The reversal of 4045125 is 5215404.

It is not a de Polignac number, because 4045125 - 2² = 4045121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4045121) 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 63 ways as a sum of consecutive naturals, for example, 60342 + ... + 60408.

It is an arithmetic number, because the mean of its divisors is an integer number (127296).

Almost surely, 2^4045125 is an apocalyptic number.

It is an amenable number.

4045125 is an abundant number, since it is smaller than the sum of its proper divisors (4101819).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4045125 is a wasteful number, since it uses less digits than its factorization.

4045125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 4045125 is about 2011.2496115599. The cubic root of 4045125 is about 159.3348033960.

The spelling of 4045125 in words is "four million, forty-five thousand, one hundred twenty-five".