42250564644 has 48 divisors (see below), whose sum is σ = 104429517696. Its totient is φ = 13249267200.

The previous prime is 42250564589. The next prime is 42250564649. The reversal of 42250564644 is 44646505224.

It is a super-2 number, since 2×42250564644² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42250564596 and 42250564605.

It is not an unprimeable number, because it can be changed into a prime (42250564649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433329 + ... + 521799.

It is an arithmetic number, because the mean of its divisors is an integer number (2175614952).

Almost surely, 2^42250564644 is an apocalyptic number.

It is an amenable number.

42250564644 is an abundant number, since it is smaller than the sum of its proper divisors (62178953052).

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

42250564644 is a wasteful number, since it uses less digits than its factorization.

42250564644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90836 (or 90834 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 42.

The spelling of 42250564644 in words is "forty-two billion, two hundred fifty million, five hundred sixty-four thousand, six hundred forty-four".