4025525221 has 8 divisors (see below), whose sum is σ = 4074243264. Its totient is φ = 3977037120.

The previous prime is 4025525191. The next prime is 4025525227. The reversal of 4025525221 is 1225255204.

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

It is a cyclic number.

It is not a de Polignac number, because 4025525221 - 2²⁵ = 3991970789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4025525221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4025525227) 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, 22131 + ... + 92416.

It is an arithmetic number, because the mean of its divisors is an integer number (509280408).

Almost surely, 2^4025525221 is an apocalyptic number.

It is an amenable number.

4025525221 is a deficient number, since it is larger than the sum of its proper divisors (48718043).

4025525221 is a wasteful number, since it uses less digits than its factorization.

4025525221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114971.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 4025525221 is about 63447.0268885785. The cubic root of 4025525221 is about 1590.7704585842.

The spelling of 4025525221 in words is "four billion, twenty-five million, five hundred twenty-five thousand, two hundred twenty-one".