20525051005 has 8 divisors (see below), whose sum is σ = 24652519992. Its totient is φ = 16405068288.

The previous prime is 20525050957. The next prime is 20525051009. The reversal of 20525051005 is 50015052502.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5659101529 + 14865949476 = 75227^2 + 121926^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20525051005 - 2²¹ = 20522953853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525051009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1865532 + ... + 1876501.

It is an arithmetic number, because the mean of its divisors is an integer number (3081564999).

Almost surely, 2^20525051005 is an apocalyptic number.

It is an amenable number.

20525051005 is a deficient number, since it is larger than the sum of its proper divisors (4127468987).

20525051005 is a wasteful number, since it uses less digits than its factorization.

20525051005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3743135.

The product of its (nonzero) digits is 2500, while the sum is 25.

The spelling of 20525051005 in words is "twenty billion, five hundred twenty-five million, fifty-one thousand, five".