2125525 has 6 divisors (see below), whose sum is σ = 2635682. Its totient is φ = 1700400.

The previous prime is 2125523. The next prime is 2125531. The reversal of 2125525 is 5255212.

2125525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 69169 + 2056356 = 263^2 + 1434^2 .

It is not a de Polignac number, because 2125525 - 2¹ = 2125523 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2125496 and 2125505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42486 + ... + 42535.

2^2125525 is an apocalyptic number.

2125525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2125525 is a deficient number, since it is larger than the sum of its proper divisors (510157).

2125525 is an equidigital number, since it uses as much as digits as its factorization.

2125525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85031 (or 85026 counting only the distinct ones).

The product of its digits is 1000, while the sum is 22.

The square root of 2125525 is about 1457.9180361049. The cubic root of 2125525 is about 128.5746662912.

The spelling of 2125525 in words is "two million, one hundred twenty-five thousand, five hundred twenty-five".