43625423689 has 9 divisors (see below), whose sum is σ = 46046533383. Its totient is φ = 41325589152.

The previous prime is 43625423663. The next prime is 43625423693. The reversal of 43625423689 is 98632452634.

The square root of 43625423689 is 208867.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7294014025 + 36331409664 = 85405^2 + 190608^2 .

It is not a de Polignac number, because 43625423689 - 2⁵ = 43625423657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43625423609) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3962977 + ... + 3973969.

It is an arithmetic number, because the mean of its divisors is an integer number (5116281487).

Almost surely, 2^43625423689 is an apocalyptic number.

43625423689 is the 208867-th square number.

43625423689 is the 104434-th centered octagonal number.

It is an amenable number.

43625423689 is a deficient number, since it is larger than the sum of its proper divisors (2421109694).

43625423689 is an frugal number, since it uses more digits than its factorization.

43625423689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22024 (or 11012 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 52.

The spelling of 43625423689 in words is "forty-three billion, six hundred twenty-five million, four hundred twenty-three thousand, six hundred eighty-nine".