42510925 has 6 divisors (see below), whose sum is σ = 52713578. Its totient is φ = 34008720.

The previous prime is 42510917. The next prime is 42510947. The reversal of 42510925 is 52901524.

It can be written as a sum of positive squares in 3 ways, for example, as 481636 + 42029289 = 694^2 + 6483^2 .

It is not a de Polignac number, because 42510925 - 2³ = 42510917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42510893 and 42510902.

It is a congruent number.

It is an unprimeable number.

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, 850194 + ... + 850243.

Almost surely, 2^42510925 is an apocalyptic number.

It is an amenable number.

42510925 is a deficient number, since it is larger than the sum of its proper divisors (10202653).

42510925 is a wasteful number, since it uses less digits than its factorization.

42510925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700447 (or 1700442 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 42510925 is about 6520.0402606119. The cubic root of 42510925 is about 349.0065022885.

The spelling of 42510925 in words is "forty-two million, five hundred ten thousand, nine hundred twenty-five".