102538525 has 6 divisors (see below), whose sum is σ = 127147802. Its totient is φ = 82030800.

The previous prime is 102538523. The next prime is 102538651. The reversal of 102538525 is 525835201.

It can be written as a sum of positive squares in 3 ways, for example, as 5299204 + 97239321 = 2302^2 + 9861^2 .

It is not a de Polignac number, because 102538525 - 2¹ = 102538523 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 (102538523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2050746 + ... + 2050795.

Almost surely, 2^102538525 is an apocalyptic number.

It is an amenable number.

102538525 is a deficient number, since it is larger than the sum of its proper divisors (24609277).

102538525 is an equidigital number, since it uses as much as digits as its factorization.

102538525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101551 (or 4101546 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 102538525 is about 10126.1308010513. The cubic root of 102538525 is about 468.0537063673.

The spelling of 102538525 in words is "one hundred two million, five hundred thirty-eight thousand, five hundred twenty-five".