20525025301015 has 4 divisors (see below), whose sum is σ = 24630030361224. Its totient is φ = 16420020240808.

The previous prime is 20525025300971. The next prime is 20525025301019. The reversal of 20525025301015 is 51010352052502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20525025301015 - 2²¹ = 20525023203863 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525025301019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2052502530097 + ... + 2052502530106.

It is an arithmetic number, because the mean of its divisors is an integer number (6157507590306).

Almost surely, 2^{20525025301015} is an apocalyptic number.

20525025301015 is a deficient number, since it is larger than the sum of its proper divisors (4105005060209).

20525025301015 is an equidigital number, since it uses as much as digits as its factorization.

20525025301015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105005060208.

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 20525025301015 its reverse (51010352052502), we get a palindrome (71535377353517).

The spelling of 20525025301015 in words is "twenty trillion, five hundred twenty-five billion, twenty-five million, three hundred one thousand, fifteen".