22066506403425 has 72 divisors (see below), whose sum is σ = 43125423070080. Its totient is φ = 10696726857600.

The previous prime is 22066506403387. The next prime is 22066506403433. The reversal of 22066506403425 is 52430460566022.

22066506403425 is a `hidden beast` number, since 2 + 2 + 0 + 66 + 506 + 40 + 3 + 42 + 5 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-22066506403425 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11241672 + ... + 13057878.

Almost surely, 2^{22066506403425} is an apocalyptic number.

22066506403425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22066506403425 is a deficient number, since it is larger than the sum of its proper divisors (21058916666655).

22066506403425 is a wasteful number, since it uses less digits than its factorization.

22066506403425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821143 (or 1821135 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

Adding to 22066506403425 its reverse (52430460566022), we get a palindrome (74496966969447).

The spelling of 22066506403425 in words is "twenty-two trillion, sixty-six billion, five hundred six million, four hundred three thousand, four hundred twenty-five".