102718925 has 6 divisors (see below), whose sum is σ = 127371498. Its totient is φ = 82175120.

The previous prime is 102718909. The next prime is 102718927. The reversal of 102718925 is 529817201.

It can be written as a sum of positive squares in 3 ways, for example, as 2758921 + 99960004 = 1661^2 + 9998^2 .

It is not a de Polignac number, because 102718925 - 2⁴ = 102718909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102718927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2054354 + ... + 2054403.

It is an arithmetic number, because the mean of its divisors is an integer number (21228583).

Almost surely, 2^102718925 is an apocalyptic number.

It is an amenable number.

102718925 is a deficient number, since it is larger than the sum of its proper divisors (24652573).

102718925 is an equidigital number, since it uses as much as digits as its factorization.

102718925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4108767 (or 4108762 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 102718925 is about 10135.0345337349. The cubic root of 102718925 is about 468.3280338921.

The spelling of 102718925 in words is "one hundred two million, seven hundred eighteen thousand, nine hundred twenty-five".