40218432425 has 12 divisors (see below), whose sum is σ = 49873362960. Its totient is φ = 32173128720.

The previous prime is 40218432421. The next prime is 40218432467. The reversal of 40218432425 is 52423481204.

40218432425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40218432425 - 2² = 40218432421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40218432421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 860714 + ... + 906236.

It is an arithmetic number, because the mean of its divisors is an integer number (4156113580).

Almost surely, 2^40218432425 is an apocalyptic number.

It is an amenable number.

40218432425 is a deficient number, since it is larger than the sum of its proper divisors (9654930535).

40218432425 is a wasteful number, since it uses less digits than its factorization.

40218432425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80872 (or 80867 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 35.

The spelling of 40218432425 in words is "forty billion, two hundred eighteen million, four hundred thirty-two thousand, four hundred twenty-five".