20625627399804 has 144 divisors (see below), whose sum is σ = 59708476219392. Its totient is φ = 5880849422976.

The previous prime is 20625627399803. The next prime is 20625627399863. The reversal of 20625627399804 is 40899372652602.

It is a happy number.

20625627399804 is a `hidden beast` number, since 2 + 0 + 62 + 562 + 7 + 3 + 9 + 9 + 8 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625627399803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 291356997 + ... + 291427779.

It is an arithmetic number, because the mean of its divisors is an integer number (414642195968).

Almost surely, 2^{20625627399804} 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 20625627399804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29854238109696).

20625627399804 is an abundant number, since it is smaller than the sum of its proper divisors (39082848819588).

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

20625627399804 is a wasteful number, since it uses less digits than its factorization.

20625627399804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73176 (or 73171 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 63.

The spelling of 20625627399804 in words is "twenty trillion, six hundred twenty-five billion, six hundred twenty-seven million, three hundred ninety-nine thousand, eight hundred four".