43725629 has 2 divisors, whose sum is σ = 43725630. Its totient is φ = 43725628.

The previous prime is 43725623. The next prime is 43725653. The reversal of 43725629 is 92652734.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25020004 + 18705625 = 5002^2 + 4325^2 .

It is a cyclic number.

It is not a de Polignac number, because 43725629 - 2⁸ = 43725373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43725592 and 43725601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43725623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21862814 + 21862815.

It is an arithmetic number, because the mean of its divisors is an integer number (21862815).

Almost surely, 2^43725629 is an apocalyptic number.

It is an amenable number.

43725629 is a deficient number, since it is larger than the sum of its proper divisors (1).

43725629 is an equidigital number, since it uses as much as digits as its factorization.

43725629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 43725629 is about 6612.5357465952. The cubic root of 43725629 is about 352.2994959867.

It can be divided in two parts, 4372 and 5629, that added together give a palindrome (10001).

The spelling of 43725629 in words is "forty-three million, seven hundred twenty-five thousand, six hundred twenty-nine".