68025221 has 4 divisors (see below), whose sum is σ = 74209344. Its totient is φ = 61841100.

The previous prime is 68025179. The next prime is 68025233. The reversal of 68025221 is 12252086.

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.

It is a cyclic number.

It is not a de Polignac number, because 68025221 - 2¹⁰ = 68024197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68025521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3092045 + ... + 3092066.

It is an arithmetic number, because the mean of its divisors is an integer number (18552336).

Almost surely, 2^68025221 is an apocalyptic number.

It is an amenable number.

68025221 is a deficient number, since it is larger than the sum of its proper divisors (6184123).

68025221 is a wasteful number, since it uses less digits than its factorization.

68025221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6184122.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 68025221 is about 8247.7403572130. The cubic root of 68025221 is about 408.2159664166.

The spelling of 68025221 in words is "sixty-eight million, twenty-five thousand, two hundred twenty-one".