20120351573625 has 64 divisors (see below), whose sum is σ = 34349279078400. Its totient is φ = 10453641105600.

The previous prime is 20120351573611. The next prime is 20120351573627. The reversal of 20120351573625 is 52637515302102.

It is a happy number.

It is not a de Polignac number, because 20120351573625 - 2²³ = 20120343185017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20120351573627) 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 63 ways as a sum of consecutive naturals, for example, 4465236 + ... + 7757514.

It is an arithmetic number, because the mean of its divisors is an integer number (536707485600).

Almost surely, 2^{20120351573625} is an apocalyptic number.

20120351573625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20120351573625 is a deficient number, since it is larger than the sum of its proper divisors (14228927504775).

20120351573625 is a wasteful number, since it uses less digits than its factorization.

20120351573625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292719 (or 3292709 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 42.

Adding to 20120351573625 its reverse (52637515302102), we get a palindrome (72757866875727).

The spelling of 20120351573625 in words is "twenty trillion, one hundred twenty billion, three hundred fifty-one million, five hundred seventy-three thousand, six hundred twenty-five".