4025001 has 8 divisors (see below), whose sum is σ = 5440480. Its totient is φ = 2646432.

The previous prime is 4024981. The next prime is 4025003. The reversal of 4025001 is 1005204.

4025001 = T₁₅₈ + T₁₅₉ + ... + T₃₀₃.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-4025001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4025003) 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 7 ways as a sum of consecutive naturals, for example, 8971 + ... + 9408.

It is an arithmetic number, because the mean of its divisors is an integer number (680060).

Almost surely, 2^4025001 is an apocalyptic number.

It is an amenable number.

4025001 is a deficient number, since it is larger than the sum of its proper divisors (1415479).

4025001 is a wasteful number, since it uses less digits than its factorization.

4025001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18455.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 4025001 is about 2006.2405139963. The cubic root of 4025001 is about 159.0701403290.

The spelling of 4025001 in words is "four million, twenty-five thousand, one".