42251425636 has 48 divisors (see below), whose sum is σ = 89447500800. Its totient is φ = 17058839328.

The previous prime is 42251425621. The next prime is 42251425663. The reversal of 42251425636 is 63652415224.

It is a happy number.

42251425636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126616 + ... + 317071.

It is an arithmetic number, because the mean of its divisors is an integer number (1863489600).

Almost surely, 2^42251425636 is an apocalyptic number.

It is an amenable number.

42251425636 is an abundant number, since it is smaller than the sum of its proper divisors (47196075164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42251425636 is a wasteful number, since it uses less digits than its factorization.

42251425636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443896 (or 443894 counting only the distinct ones).

The product of its digits is 345600, while the sum is 40.

It can be divided in two parts, 4225 and 1425636, that multiplied together give a square (6023312100 = 77610²).

The spelling of 42251425636 in words is "forty-two billion, two hundred fifty-one million, four hundred twenty-five thousand, six hundred thirty-six".