102215344342525 has 12 divisors (see below), whose sum is σ = 126766865502900. Its totient is φ = 81759476430080.

The previous prime is 102215344342523. The next prime is 102215344342561. The reversal of 102215344342525 is 525243443512201.

It can be written as a sum of positive squares in 6 ways, for example, as 14994575632089 + 87220768710436 = 3872283^2 + 9339206^2 .

It is not a de Polignac number, because 102215344342525 - 2¹ = 102215344342523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102215344342523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319813180 + ... + 320132629.

It is an arithmetic number, because the mean of its divisors is an integer number (10563905458575).

Almost surely, 2^{102215344342525} is an apocalyptic number.

It is an amenable number.

102215344342525 is a deficient number, since it is larger than the sum of its proper divisors (24551521160375).

102215344342525 is an equidigital number, since it uses as much as digits as its factorization.

102215344342525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639952208 (or 639952203 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 43.

Adding to 102215344342525 its reverse (525243443512201), we get a palindrome (627458787854726).

The spelling of 102215344342525 in words is "one hundred two trillion, two hundred fifteen billion, three hundred forty-four million, three hundred forty-two thousand, five hundred twenty-five".