20707564456325 has 24 divisors (see below), whose sum is σ = 26732614804488. Its totient is φ = 15897521479680.

The previous prime is 20707564456321. The next prime is 20707564456349. The reversal of 20707564456325 is 52365446570702.

It can be written as a sum of positive squares in 12 ways, for example, as 1271299095361 + 19436265360964 = 1127519^2 + 4408658^2 .

It is not a de Polignac number, because 20707564456325 - 2² = 20707564456321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20707564456321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153265052 + ... + 153400101.

It is an arithmetic number, because the mean of its divisors is an integer number (1113858950187).

Almost surely, 2^{20707564456325} is an apocalyptic number.

20707564456325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20707564456325 is a deficient number, since it is larger than the sum of its proper divisors (6025050348163).

20707564456325 is a wasteful number, since it uses less digits than its factorization.

20707564456325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306665273 (or 306665268 counting only the distinct ones).

The product of its (nonzero) digits is 42336000, while the sum is 56.

The spelling of 20707564456325 in words is "twenty trillion, seven hundred seven billion, five hundred sixty-four million, four hundred fifty-six thousand, three hundred twenty-five".