20325572949 has 32 divisors (see below), whose sum is σ = 31567371264. Its totient is φ = 11508900480.

The previous prime is 20325572899. The next prime is 20325572977. The reversal of 20325572949 is 94927552302.

It is not a de Polignac number, because 20325572949 - 2¹¹ = 20325570901 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 20325572898 and 20325572907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20325572999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278752 + ... + 344025.

It is an arithmetic number, because the mean of its divisors is an integer number (986480352).

Almost surely, 2^20325572949 is an apocalyptic number.

It is an amenable number.

20325572949 is a deficient number, since it is larger than the sum of its proper divisors (11241798315).

20325572949 is a wasteful number, since it uses less digits than its factorization.

20325572949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622857.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 20325572949 in words is "twenty billion, three hundred twenty-five million, five hundred seventy-two thousand, nine hundred forty-nine".