102130625 has 10 divisors (see below), whose sum is σ = 127623210. Its totient is φ = 81704000.

The previous prime is 102130601. The next prime is 102130627. The reversal of 102130625 is 526031201.

It can be written as a sum of positive squares in 5 ways, for example, as 66716224 + 35414401 = 8168^2 + 5951^2 .

It is not a de Polignac number, because 102130625 - 2¹⁴ = 102114241 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102130597 and 102130606.

It is not an unprimeable number, because it can be changed into a prime (102130627) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 81080 + ... + 82329.

It is an arithmetic number, because the mean of its divisors is an integer number (12762321).

Almost surely, 2^102130625 is an apocalyptic number.

It is an amenable number.

102130625 is a deficient number, since it is larger than the sum of its proper divisors (25492585).

102130625 is an frugal number, since it uses more digits than its factorization.

102130625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163429 (or 163414 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 102130625 is about 10105.9697703882. The cubic root of 102130625 is about 467.4322396954.

Adding to 102130625 its reverse (526031201), we get a palindrome (628161826).

The spelling of 102130625 in words is "one hundred two million, one hundred thirty thousand, six hundred twenty-five".