43225757891 has 8 divisors (see below), whose sum is σ = 45509269200. Its totient is φ = 40943093760.

The previous prime is 43225757879. The next prime is 43225757893. The reversal of 43225757891 is 19875752234.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43225757891 is a prime.

It is a super-2 number, since 2×43225757891² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43225757893) 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, 105686 + ... + 312443.

It is an arithmetic number, because the mean of its divisors is an integer number (5688658650).

Almost surely, 2^43225757891 is an apocalyptic number.

43225757891 is a deficient number, since it is larger than the sum of its proper divisors (2283511309).

43225757891 is a wasteful number, since it uses less digits than its factorization.

43225757891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423589.

The product of its digits is 4233600, while the sum is 53.

The spelling of 43225757891 in words is "forty-three billion, two hundred twenty-five million, seven hundred fifty-seven thousand, eight hundred ninety-one".