20525050415 has 4 divisors (see below), whose sum is σ = 24630060504. Its totient is φ = 16420040328.

The previous prime is 20525050397. The next prime is 20525050417. The reversal of 20525050415 is 51405052502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51405052502 = 2 ⋅25702526251.

It is a cyclic number.

It is not a de Polignac number, because 20525050415 - 2⁸ = 20525050159 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 (20525050417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2052505037 + ... + 2052505046.

It is an arithmetic number, because the mean of its divisors is an integer number (6157515126).

Almost surely, 2^20525050415 is an apocalyptic number.

20525050415 is a deficient number, since it is larger than the sum of its proper divisors (4105010089).

20525050415 is an equidigital number, since it uses as much as digits as its factorization.

20525050415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4105010088.

The product of its (nonzero) digits is 10000, while the sum is 29.

The spelling of 20525050415 in words is "twenty billion, five hundred twenty-five million, fifty thousand, four hundred fifteen".