20215410525 has 72 divisors (see below), whose sum is σ = 38257596000. Its totient is φ = 10175552640.

The previous prime is 20215410521. The next prime is 20215410533. The reversal of 20215410525 is 52501451202.

It is not a de Polignac number, because 20215410525 - 2² = 20215410521 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20215410521) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1141186 + ... + 1158764.

It is an arithmetic number, because the mean of its divisors is an integer number (531355500).

Almost surely, 2^20215410525 is an apocalyptic number.

20215410525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20215410525 is a deficient number, since it is larger than the sum of its proper divisors (18042185475).

20215410525 is a wasteful number, since it uses less digits than its factorization.

20215410525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17883 (or 17875 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 20215410525 its reverse (52501451202), we get a palindrome (72716861727).

The spelling of 20215410525 in words is "twenty billion, two hundred fifteen million, four hundred ten thousand, five hundred twenty-five".