42751525 has 6 divisors (see below), whose sum is σ = 53011922. Its totient is φ = 34201200.

The previous prime is 42751519. The next prime is 42751531. The reversal of 42751525 is 52515724.

It is an interprime number because it is at equal distance from previous prime (42751519) and next prime (42751531).

It can be written as a sum of positive squares in 3 ways, for example, as 1252161 + 41499364 = 1119^2 + 6442^2 .

It is not a de Polignac number, because 42751525 - 2³ = 42751517 is a prime.

It is a Duffinian number.

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, 855006 + ... + 855055.

Almost surely, 2^42751525 is an apocalyptic number.

It is an amenable number.

42751525 is a deficient number, since it is larger than the sum of its proper divisors (10260397).

42751525 is a wasteful number, since it uses less digits than its factorization.

42751525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710071 (or 1710066 counting only the distinct ones).

The product of its digits is 14000, while the sum is 31.

The square root of 42751525 is about 6538.4650339357. The cubic root of 42751525 is about 349.6636905545.

The spelling of 42751525 in words is "forty-two million, seven hundred fifty-one thousand, five hundred twenty-five".