102505025 has 12 divisors (see below), whose sum is σ = 145264512. Its totient is φ = 70289040.

The previous prime is 102505009. The next prime is 102505027. The reversal of 102505025 is 520505201.

It is not a de Polignac number, because 102505025 - 2⁴ = 102505009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102504988 and 102505006.

It is not an unprimeable number, because it can be changed into a prime (102505027) 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, 292697 + ... + 293046.

It is an arithmetic number, because the mean of its divisors is an integer number (12105376).

Almost surely, 2^102505025 is an apocalyptic number.

It is an amenable number.

102505025 is a deficient number, since it is larger than the sum of its proper divisors (42759487).

102505025 is an equidigital number, since it uses as much as digits as its factorization.

102505025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585760 (or 585755 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 102505025 is about 10124.4765296780. The cubic root of 102505025 is about 468.0027287566.

The spelling of 102505025 in words is "one hundred two million, five hundred five thousand, twenty-five".