20425501002104 has 128 divisors (see below), whose sum is σ = 42829136363520. Its totient is φ = 9054148118400.

The previous prime is 20425501002091. The next prime is 20425501002119. The reversal of 20425501002104 is 40120010552402.

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, 349656659 + ... + 349715069.

It is an arithmetic number, because the mean of its divisors is an integer number (334602627840).

Almost surely, 2^{20425501002104} 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 20425501002104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21414568181760).

20425501002104 is an abundant number, since it is smaller than the sum of its proper divisors (22403635361416).

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

20425501002104 is a wasteful number, since it uses less digits than its factorization.

20425501002104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59089 (or 59085 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 20425501002104 its reverse (40120010552402), we get a palindrome (60545511554506).

The spelling of 20425501002104 in words is "twenty trillion, four hundred twenty-five billion, five hundred one million, two thousand, one hundred four".