664125130 has 16 divisors (see below), whose sum is σ = 1196189280. Its totient is φ = 265480272.

The previous prime is 664125109. The next prime is 664125131. The reversal of 664125130 is 31521466.

It is not an unprimeable number, because it can be changed into a prime (664125131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4140 + ... + 36679.

It is an arithmetic number, because the mean of its divisors is an integer number (74761830).

Almost surely, 2^664125130 is an apocalyptic number.

664125130 is a deficient number, since it is larger than the sum of its proper divisors (532064150).

664125130 is a wasteful number, since it uses less digits than its factorization.

664125130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42453.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 664125130 is about 25770.6253319550. The cubic root of 664125130 is about 872.4689326464.

Adding to 664125130 its reverse (31521466), we get a palindrome (695646596).

The spelling of 664125130 in words is "six hundred sixty-four million, one hundred twenty-five thousand, one hundred thirty".