20013212625 has 32 divisors (see below), whose sum is σ = 38059417344. Its totient is φ = 9148896000.

The previous prime is 20013212599. The next prime is 20013212629. The reversal of 20013212625 is 52621231002.

It is not a de Polignac number, because 20013212625 - 2⁷ = 20013212497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20013212595 and 20013212604.

It is not an unprimeable number, because it can be changed into a prime (20013212629) 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, 3809416 + ... + 3814665.

It is an arithmetic number, because the mean of its divisors is an integer number (1189356792).

Almost surely, 2^20013212625 is an apocalyptic number.

20013212625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20013212625 is a deficient number, since it is larger than the sum of its proper divisors (18046204719).

20013212625 is an equidigital number, since it uses as much as digits as its factorization.

20013212625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7624106 (or 7624096 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 20013212625 its reverse (52621231002), we get a palindrome (72634443627).

The spelling of 20013212625 in words is "twenty billion, thirteen million, two hundred twelve thousand, six hundred twenty-five".