20525565410 has 48 divisors (see below), whose sum is σ = 43165933560. Its totient is φ = 7006567680.

The previous prime is 20525565397. The next prime is 20525565413. The reversal of 20525565410 is 1456552502.

It can be written as a sum of positive squares in 4 ways, for example, as 19680442369 + 845123041 = 140287^2 + 29071^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (20525565413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20750 + ... + 203670.

Almost surely, 2^20525565410 is an apocalyptic number.

20525565410 is an abundant number, since it is smaller than the sum of its proper divisors (22640368150).

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

20525565410 is a wasteful number, since it uses less digits than its factorization.

20525565410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183171 (or 183164 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 20525565410 in words is "twenty billion, five hundred twenty-five million, five hundred sixty-five thousand, four hundred ten".