102102625 has 8 divisors (see below), whose sum is σ = 127424232. Its totient is φ = 81682000.

The previous prime is 102102601. The next prime is 102102641. The reversal of 102102625 is 526201201.

It can be written as a sum of positive squares in 4 ways, for example, as 10556001 + 91546624 = 3249^2 + 9568^2 .

It is not a de Polignac number, because 102102625 - 2¹⁵ = 102069857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408286 + ... + 408535.

It is an arithmetic number, because the mean of its divisors is an integer number (15928029).

Almost surely, 2^102102625 is an apocalyptic number.

It is an amenable number.

102102625 is a deficient number, since it is larger than the sum of its proper divisors (25321607).

102102625 is an frugal number, since it uses more digits than its factorization.

102102625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816836 (or 816826 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 102102625 is about 10104.5843556279. The cubic root of 102102625 is about 467.3895189184.

Adding to 102102625 its reverse (526201201), we get a palindrome (628303826).

The spelling of 102102625 in words is "one hundred two million, one hundred two thousand, six hundred twenty-five".