20413525561252 has 12 divisors (see below), whose sum is σ = 35745228989260. Its totient is φ = 10200602992896.

The previous prime is 20413525561229. The next prime is 20413525561271. The reversal of 20413525561252 is 25216552531402.

It can be written as a sum of positive squares in 2 ways, for example, as 10778312245156 + 9635213316096 = 3283034^2 + 3104064^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20413525561199 and 20413525561208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539939477 + ... + 1539952732.

Almost surely, 2^{20413525561252} is an apocalyptic number.

It is an amenable number.

20413525561252 is a deficient number, since it is larger than the sum of its proper divisors (15331703428008).

20413525561252 is a wasteful number, since it uses less digits than its factorization.

20413525561252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079893870 (or 3079893868 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 20413525561252 in words is "twenty trillion, four hundred thirteen billion, five hundred twenty-five million, five hundred sixty-one thousand, two hundred fifty-two".