20730733225 has 24 divisors (see below), whose sum is σ = 26377686720. Its totient is φ = 16153475520.

The previous prime is 20730733193. The next prime is 20730733271. The reversal of 20730733225 is 52233703702.

It is not a de Polignac number, because 20730733225 - 2⁵ = 20730733193 is a prime.

It is a super-2 number, since 2×20730733225² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359067 + ... + 412783.

It is an arithmetic number, because the mean of its divisors is an integer number (1099070280).

Almost surely, 2^20730733225 is an apocalyptic number.

20730733225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20730733225 is a deficient number, since it is larger than the sum of its proper divisors (5646953495).

20730733225 is a wasteful number, since it uses less digits than its factorization.

20730733225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54129 (or 54124 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 34.

The spelling of 20730733225 in words is "twenty billion, seven hundred thirty million, seven hundred thirty-three thousand, two hundred twenty-five".