667261425 has 24 divisors (see below), whose sum is σ = 1106089920. Its totient is φ = 354942400.

The previous prime is 667261423. The next prime is 667261459. The reversal of 667261425 is 524162766.

It is not a de Polignac number, because 667261425 - 2¹ = 667261423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667261421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17740 + ... + 40610.

It is an arithmetic number, because the mean of its divisors is an integer number (46087080).

Almost surely, 2^667261425 is an apocalyptic number.

It is an amenable number.

667261425 is a deficient number, since it is larger than the sum of its proper divisors (438828495).

667261425 is a wasteful number, since it uses less digits than its factorization.

667261425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23273 (or 23268 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 667261425 is about 25831.4038526751. The cubic root of 667261425 is about 873.8401721506.

The spelling of 667261425 in words is "six hundred sixty-seven million, two hundred sixty-one thousand, four hundred twenty-five".