75025221 has 8 divisors (see below), whose sum is σ = 100415040. Its totient is φ = 49826112.

The previous prime is 75025219. The next prime is 75025231. The reversal of 75025221 is 12252057.

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

It is not a de Polignac number, because 75025221 - 2¹ = 75025219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 75025191 and 75025200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75025201) 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, 46756 + ... + 48333.

It is an arithmetic number, because the mean of its divisors is an integer number (12551880).

Almost surely, 2^75025221 is an apocalyptic number.

It is an amenable number.

75025221 is a deficient number, since it is larger than the sum of its proper divisors (25389819).

75025221 is a wasteful number, since it uses less digits than its factorization.

75025221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95355.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 75025221 is about 8661.7100505616. The cubic root of 75025221 is about 421.7635989425.

Adding to 75025221 its reverse (12252057), we get a palindrome (87277278).

The spelling of 75025221 in words is "seventy-five million, twenty-five thousand, two hundred twenty-one".