40531725218 has 4 divisors (see below), whose sum is σ = 60797587830. Its totient is φ = 20265862608.

The previous prime is 40531725211. The next prime is 40531725253. The reversal of 40531725218 is 81252713504.

40531725218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40506795169 + 24930049 = 201263^2 + 4993^2 .

It is not an unprimeable number, because it can be changed into a prime (40531725211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10132931303 + ... + 10132931306.

Almost surely, 2^40531725218 is an apocalyptic number.

40531725218 is a deficient number, since it is larger than the sum of its proper divisors (20265862612).

40531725218 is a wasteful number, since it uses less digits than its factorization.

40531725218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20265862611.

The product of its (nonzero) digits is 67200, while the sum is 38.

It can be divided in two parts, 4053 and 1725218, that added together give a palindrome (1729271).

The spelling of 40531725218 in words is "forty billion, five hundred thirty-one million, seven hundred twenty-five thousand, two hundred eighteen".