63942225424 has 135 divisors (see below), whose sum is σ = 158600228493. Its totient is φ = 24882211200.

The previous prime is 63942225353. The next prime is 63942225427. The reversal of 63942225424 is 42452224936.

The square root of 63942225424 is 252868.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 17458865424 + 46483360000 = 132132^2 + 215600^2 .

It is not an unprimeable number, because it can be changed into a prime (63942225427) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 77882934 + ... + 77883754.

Almost surely, 2^63942225424 is an apocalyptic number.

63942225424 is the 252868-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63942225424

63942225424 is an abundant number, since it is smaller than the sum of its proper divisors (94658003069).

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

63942225424 is an equidigital number, since it uses as much as digits as its factorization.

63942225424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 841 counting only the distinct ones).

The product of its digits is 829440, while the sum is 43.

The spelling of 63942225424 in words is "sixty-three billion, nine hundred forty-two million, two hundred twenty-five thousand, four hundred twenty-four".