20315501201525 has 48 divisors (see below), whose sum is σ = 25837906089600. Its totient is φ = 15839342588160.

The previous prime is 20315501201507. The next prime is 20315501201573. The reversal of 20315501201525 is 52510210551302.

It is not a de Polignac number, because 20315501201525 - 2⁶ = 20315501201461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20315501201491 and 20315501201500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 777792416 + ... + 777818534.

It is an arithmetic number, because the mean of its divisors is an integer number (538289710200).

Almost surely, 2^{20315501201525} is an apocalyptic number.

20315501201525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20315501201525 is a deficient number, since it is larger than the sum of its proper divisors (5522404888075).

20315501201525 is a wasteful number, since it uses less digits than its factorization.

20315501201525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30078 (or 30073 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

Adding to 20315501201525 its reverse (52510210551302), we get a palindrome (72825711752827).

The spelling of 20315501201525 in words is "twenty trillion, three hundred fifteen billion, five hundred one million, two hundred one thousand, five hundred twenty-five".