102013525 has 6 divisors (see below), whose sum is σ = 126496802. Its totient is φ = 81610800.

The previous prime is 102013523. The next prime is 102013553. The reversal of 102013525 is 525310201.

It can be written as a sum of positive squares in 3 ways, for example, as 25310961 + 76702564 = 5031^2 + 8758^2 .

It is not a de Polignac number, because 102013525 - 2¹ = 102013523 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 (102013523) 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, 2040246 + ... + 2040295.

Almost surely, 2^102013525 is an apocalyptic number.

It is an amenable number.

102013525 is a deficient number, since it is larger than the sum of its proper divisors (24483277).

102013525 is an equidigital number, since it uses as much as digits as its factorization.

102013525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080551 (or 4080546 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 102013525 is about 10100.1745034430. The cubic root of 102013525 is about 467.2535233104.

Adding to 102013525 its reverse (525310201), we get a palindrome (627323726).

The spelling of 102013525 in words is "one hundred two million, thirteen thousand, five hundred twenty-five".