4025091 has 8 divisors (see below), whose sum is σ = 6133504. Its totient is φ = 2300040.

The previous prime is 4025089. The next prime is 4025111. The reversal of 4025091 is 1905204.

4025091 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 4025091 - 2¹ = 4025089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 191671 = 4025091 / (4 + 0 + 2 + 5 + 0 + 9 + 1).

It is a Duffinian number.

4025091 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (4025041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95815 + ... + 95856.

It is an arithmetic number, because the mean of its divisors is an integer number (766688).

Almost surely, 2^4025091 is an apocalyptic number.

4025091 is a deficient number, since it is larger than the sum of its proper divisors (2108413).

4025091 is a wasteful number, since it uses less digits than its factorization.

4025091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191681.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 4025091 is about 2006.2629438835. The cubic root of 4025091 is about 159.0713259358.

The spelling of 4025091 in words is "four million, twenty-five thousand, ninety-one".