102440625 has 72 divisors (see below), whose sum is σ = 199487232. Its totient is φ = 46620000.

The previous prime is 102440617. The next prime is 102440641. The reversal of 102440625 is 526044201.

It is not a de Polignac number, because 102440625 - 2³ = 102440617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102440595 and 102440604.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 459264 + ... + 459486.

It is an arithmetic number, because the mean of its divisors is an integer number (2770656).

Almost surely, 2^102440625 is an apocalyptic number.

102440625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102440625 is a deficient number, since it is larger than the sum of its proper divisors (97046607).

102440625 is an frugal number, since it uses more digits than its factorization.

102440625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 102440625 is about 10121.2956186449. The cubic root of 102440625 is about 467.9046987991.

Adding to 102440625 its reverse (526044201), we get a palindrome (628484826).

The spelling of 102440625 in words is "one hundred two million, four hundred forty thousand, six hundred twenty-five".