102257025 has 24 divisors (see below), whose sum is σ = 182071680. Its totient is φ = 50341440.

The previous prime is 102257009. The next prime is 102257027. The reversal of 102257025 is 520752201.

It is not a de Polignac number, because 102257025 - 2⁴ = 102257009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102256986 and 102257004.

It is not an unprimeable number, because it can be changed into a prime (102257027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51465 + ... + 53414.

It is an arithmetic number, because the mean of its divisors is an integer number (7586320).

Almost surely, 2^102257025 is an apocalyptic number.

102257025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102257025 is a deficient number, since it is larger than the sum of its proper divisors (79814655).

102257025 is a wasteful number, since it uses less digits than its factorization.

102257025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104905 (or 104900 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 102257025 is about 10112.2215660062. The cubic root of 102257025 is about 467.6249963648.

The spelling of 102257025 in words is "one hundred two million, two hundred fifty-seven thousand, twenty-five".