20525103520 has 48 divisors (see below), whose sum is σ = 48569892840. Its totient is φ = 8196609024.

The previous prime is 20525103497. The next prime is 20525103553. The reversal of 20525103520 is 2530152502.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5171911056 + 15353192464 = 71916^2 + 123908^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6555 + ... + 202714.

Almost surely, 2^20525103520 is an apocalyptic number.

20525103520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20525103520 is an abundant number, since it is smaller than the sum of its proper divisors (28044789320).

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

20525103520 is a wasteful number, since it uses less digits than its factorization.

20525103520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209897 (or 209889 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 20525103520 in words is "twenty billion, five hundred twenty-five million, one hundred three thousand, five hundred twenty".