20425627740544 has 256 divisors, whose sum is σ = 48166005888000. Its totient is φ = 8537021374464.

The previous prime is 20425627740523. The next prime is 20425627740673. The reversal of 20425627740544 is 44504772652402.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 20425627740491 and 20425627740500.

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, 1190365437 + ... + 1190382595.

It is an arithmetic number, because the mean of its divisors is an integer number (188148460500).

Almost surely, 2^{20425627740544} 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 20425627740544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24083002944000).

20425627740544 is an abundant number, since it is smaller than the sum of its proper divisors (27740378147456).

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

20425627740544 is a wasteful number, since it uses less digits than its factorization.

20425627740544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18865 (or 18853 counting only the distinct ones).

The product of its (nonzero) digits is 15052800, while the sum is 52.

The spelling of 20425627740544 in words is "twenty trillion, four hundred twenty-five billion, six hundred twenty-seven million, seven hundred forty thousand, five hundred forty-four".