20321254625 has 32 divisors (see below), whose sum is σ = 29144274432. Its totient is φ = 13857480000.

The previous prime is 20321254621. The next prime is 20321254649. The reversal of 20321254625 is 52645212302.

It is not a de Polignac number, because 20321254625 - 2² = 20321254621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20321254591 and 20321254600.

It is not an unprimeable number, because it can be changed into a prime (20321254621) 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, 94220 + ... + 222530.

It is an arithmetic number, because the mean of its divisors is an integer number (910758576).

Almost surely, 2^20321254625 is an apocalyptic number.

20321254625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20321254625 is a deficient number, since it is larger than the sum of its proper divisors (8823019807).

20321254625 is a wasteful number, since it uses less digits than its factorization.

20321254625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128514 (or 128504 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 20321254625 its reverse (52645212302), we get a palindrome (72966466927).

The spelling of 20321254625 in words is "twenty billion, three hundred twenty-one million, two hundred fifty-four thousand, six hundred twenty-five".