667232825437 has 4 divisors (see below), whose sum is σ = 669694939456. Its totient is φ = 664770711420.

The previous prime is 667232825417. The next prime is 667232825453. The reversal of 667232825437 is 734528232766.

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, and also an emirpimes, since its reverse is a distinct semiprime: 734528232766 = 2 ⋅367264116383.

It is a cyclic number.

It is not a de Polignac number, because 667232825437 - 2¹⁵ = 667232792669 is a prime.

It is a super-2 number, since 2×667232825437² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667232825417) 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, 1231056603 + ... + 1231057144.

It is an arithmetic number, because the mean of its divisors is an integer number (167423734864).

Almost surely, 2^667232825437 is an apocalyptic number.

It is an amenable number.

667232825437 is a deficient number, since it is larger than the sum of its proper divisors (2462114019).

667232825437 is a wasteful number, since it uses less digits than its factorization.

667232825437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462114018.

The product of its digits is 20321280, while the sum is 55.

The spelling of 667232825437 in words is "six hundred sixty-seven billion, two hundred thirty-two million, eight hundred twenty-five thousand, four hundred thirty-seven".