20510525325424 has 10 divisors (see below), whose sum is σ = 39739142818040. Its totient is φ = 10255262662704.

The previous prime is 20510525325383. The next prime is 20510525325457. The reversal of 20510525325424 is 42452352501502.

It is a super-3 number, since 3×20510525325424³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640953916404 + ... + 640953916435.

It is an arithmetic number, because the mean of its divisors is an integer number (3973914281804).

Almost surely, 2^{20510525325424} is an apocalyptic number.

It is an amenable number.

20510525325424 is a deficient number, since it is larger than the sum of its proper divisors (19228617492616).

20510525325424 is a wasteful number, since it uses less digits than its factorization.

20510525325424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281907832847 (or 1281907832841 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

Adding to 20510525325424 its reverse (42452352501502), we get a palindrome (62962877826926).

The spelling of 20510525325424 in words is "twenty trillion, five hundred ten billion, five hundred twenty-five million, three hundred twenty-five thousand, four hundred twenty-four".