52509425 has 6 divisors (see below), whose sum is σ = 65111718. Its totient is φ = 42007520.

The previous prime is 52509421. The next prime is 52509433. The reversal of 52509425 is 52490525.

52509425 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 913936 + 51595489 = 956^2 + 7183^2 .

It is not a de Polignac number, because 52509425 - 2² = 52509421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52509391 and 52509400.

It is not an unprimeable number, because it can be changed into a prime (52509421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1050164 + ... + 1050213.

It is an arithmetic number, because the mean of its divisors is an integer number (10851953).

Almost surely, 2^52509425 is an apocalyptic number.

It is an amenable number.

52509425 is a deficient number, since it is larger than the sum of its proper divisors (12602293).

52509425 is a wasteful number, since it uses less digits than its factorization.

52509425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100387 (or 2100382 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 52509425 is about 7246.3387306970. The cubic root of 52509425 is about 374.4660252019.

The spelling of 52509425 in words is "fifty-two million, five hundred nine thousand, four hundred twenty-five".