610725221 has 16 divisors (see below), whose sum is σ = 657216000. Its totient is φ = 565463808.

The previous prime is 610725197. The next prime is 610725257. The reversal of 610725221 is 122527016.

It is a cyclic number.

It is not a de Polignac number, because 610725221 - 2¹⁰ = 610724197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610728221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468056 + ... + 469358.

It is an arithmetic number, because the mean of its divisors is an integer number (41076000).

Almost surely, 2^610725221 is an apocalyptic number.

It is an amenable number.

610725221 is a deficient number, since it is larger than the sum of its proper divisors (46490779).

610725221 is a wasteful number, since it uses less digits than its factorization.

610725221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 610725221 is about 24712.8553793365. The cubic root of 610725221 is about 848.4285711370.

The spelling of 610725221 in words is "six hundred ten million, seven hundred twenty-five thousand, two hundred twenty-one".