660222325 has 36 divisors (see below), whose sum is σ = 970401060. Its totient is φ = 444138240.

The previous prime is 660222287. The next prime is 660222341. The reversal of 660222325 is 523222066.

It can be written as a sum of positive squares in 6 ways, for example, as 36072036 + 624150289 = 6006^2 + 24983^2 .

It is not a de Polignac number, because 660222325 - 2⁹ = 660221813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 660222293 and 660222302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 59841 + ... + 70009.

It is an arithmetic number, because the mean of its divisors is an integer number (26955585).

Almost surely, 2^660222325 is an apocalyptic number.

It is an amenable number.

660222325 is a deficient number, since it is larger than the sum of its proper divisors (310178735).

660222325 is a wasteful number, since it uses less digits than its factorization.

660222325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10246 (or 10234 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 660222325 is about 25694.7917874421. The cubic root of 660222325 is about 870.7565203698.

The spelling of 660222325 in words is "six hundred sixty million, two hundred twenty-two thousand, three hundred twenty-five".