102403225 has 6 divisors (see below), whose sum is σ = 126980030. Its totient is φ = 81922560.

The previous prime is 102403219. The next prime is 102403241. The reversal of 102403225 is 522304201.

It can be written as a sum of positive squares in 3 ways, for example, as 33977241 + 68425984 = 5829^2 + 8272^2 .

It is a de Polignac number, because none of the positive numbers 2^k-102403225 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2048040 + ... + 2048089.

Almost surely, 2^102403225 is an apocalyptic number.

It is an amenable number.

102403225 is a deficient number, since it is larger than the sum of its proper divisors (24576805).

102403225 is an equidigital number, since it uses as much as digits as its factorization.

102403225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096139 (or 4096134 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 102403225 is about 10119.4478604319. The cubic root of 102403225 is about 467.8477494985.

Adding to 102403225 its reverse (522304201), we get a palindrome (624707426).

The spelling of 102403225 in words is "one hundred two million, four hundred three thousand, two hundred twenty-five".