20625251403036 has 96 divisors (see below), whose sum is σ = 55794434375680. Its totient is φ = 5808144139200.

The previous prime is 20625251403019. The next prime is 20625251403073. The reversal of 20625251403036 is 63030415252602.

It is a junction number, because it is equal to n+sod(n) for n = 20625251402985 and 20625251403003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1067541 + ... + 6510771.

Almost surely, 2^{20625251403036} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20625251403036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27897217187840).

20625251403036 is an abundant number, since it is smaller than the sum of its proper divisors (35169182972644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20625251403036 is a wasteful number, since it uses less digits than its factorization.

20625251403036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5443895 (or 5443893 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 20625251403036 its reverse (63030415252602), we get a palindrome (83655666655638).

The spelling of 20625251403036 in words is "twenty trillion, six hundred twenty-five billion, two hundred fifty-one million, four hundred three thousand, thirty-six".