10025221 has 4 divisors (see below), whose sum is σ = 10195200. Its totient is φ = 9855244.

The previous prime is 10025219. The next prime is 10025233. The reversal of 10025221 is 12252001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12252001 = 823 ⋅14887.

It is a cyclic number.

It is not a de Polignac number, because 10025221 - 2¹ = 10025219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10025201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84901 + ... + 85018.

It is an arithmetic number, because the mean of its divisors is an integer number (2548800).

Almost surely, 2^10025221 is an apocalyptic number.

It is an amenable number.

10025221 is a deficient number, since it is larger than the sum of its proper divisors (169979).

10025221 is an equidigital number, since it uses as much as digits as its factorization.

10025221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169978.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 10025221 is about 3166.2629391761. The cubic root of 10025221 is about 215.6244402702.

Adding to 10025221 its reverse (12252001), we get a palindrome (22277222).

The spelling of 10025221 in words is "ten million, twenty-five thousand, two hundred twenty-one".