40443471825 has 24 divisors (see below), whose sum is σ = 67035019008. Its totient is φ = 21515503680.

The previous prime is 40443471821. The next prime is 40443471841. The reversal of 40443471825 is 52817434404.

It is not a de Polignac number, because 40443471825 - 2² = 40443471821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40443471821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 649377 + ... + 708926.

It is an arithmetic number, because the mean of its divisors is an integer number (2793125792).

Almost surely, 2^40443471825 is an apocalyptic number.

It is an amenable number.

40443471825 is a deficient number, since it is larger than the sum of its proper divisors (26591547183).

40443471825 is a wasteful number, since it uses less digits than its factorization.

40443471825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358713 (or 1358708 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 42.

The spelling of 40443471825 in words is "forty billion, four hundred forty-three million, four hundred seventy-one thousand, eight hundred twenty-five".