20572343325 has 72 divisors (see below), whose sum is σ = 37337063400. Its totient is φ = 10826618880.

The previous prime is 20572343303. The next prime is 20572343333. The reversal of 20572343325 is 52334327502.

20572343325 is a `hidden beast` number, since 2 + 0 + 572 + 34 + 33 + 25 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 5438915001 + 15133428324 = 73749^2 + 123018^2 .

It is not a de Polignac number, because 20572343325 - 2⁵ = 20572343293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20572343325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 15959281 + ... + 15960569.

It is an arithmetic number, because the mean of its divisors is an integer number (518570325).

Almost surely, 2^20572343325 is an apocalyptic number.

20572343325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20572343325 is a deficient number, since it is larger than the sum of its proper divisors (16764720075).

20572343325 is a wasteful number, since it uses less digits than its factorization.

20572343325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191 (or 2183 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 36.

The spelling of 20572343325 in words is "twenty billion, five hundred seventy-two million, three hundred forty-three thousand, three hundred twenty-five".