102125425 has 12 divisors (see below), whose sum is σ = 126810460. Its totient is φ = 81587520.

The previous prime is 102125423. The next prime is 102125431. The reversal of 102125425 is 524521201.

It can be written as a sum of positive squares in 6 ways, for example, as 39652209 + 62473216 = 6297^2 + 7904^2 .

It is not a de Polignac number, because 102125425 - 2¹ = 102125423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102125396 and 102125405.

It is not an unprimeable number, because it can be changed into a prime (102125423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18931 + ... + 23719.

Almost surely, 2^102125425 is an apocalyptic number.

It is an amenable number.

102125425 is a deficient number, since it is larger than the sum of its proper divisors (24685035).

102125425 is an equidigital number, since it uses as much as digits as its factorization.

102125425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5652 (or 5647 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 102125425 is about 10105.7124934366. The cubic root of 102125425 is about 467.4243064273.

Adding to 102125425 its reverse (524521201), we get a palindrome (626646626).

The spelling of 102125425 in words is "one hundred two million, one hundred twenty-five thousand, four hundred twenty-five".