42647525 has 18 divisors (see below), whose sum is σ = 53740050. Its totient is φ = 33572320.

The previous prime is 42647477. The next prime is 42647557. The reversal of 42647525 is 52574624.

It can be written as a sum of positive squares in 3 ways, for example, as 45796 + 42601729 = 214^2 + 6527^2 .

It is not a de Polignac number, because 42647525 - 2⁶ = 42647461 is a prime.

It is a super-2 number, since 2×42647525² = 3637622777251250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 286151 + ... + 286299.

Almost surely, 2^42647525 is an apocalyptic number.

It is an amenable number.

42647525 is a deficient number, since it is larger than the sum of its proper divisors (11092525).

42647525 is a wasteful number, since it uses less digits than its factorization.

42647525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 261 counting only the distinct ones).

The product of its digits is 67200, while the sum is 35.

The square root of 42647525 is about 6530.5072544175. The cubic root of 42647525 is about 349.3799224966.

The spelling of 42647525 in words is "forty-two million, six hundred forty-seven thousand, five hundred twenty-five".