42687625 has 8 divisors (see below), whose sum is σ = 53274312. Its totient is φ = 34150000.

The previous prime is 42687611. The next prime is 42687641. The reversal of 42687625 is 52678624.

It can be written as a sum of positive squares in 4 ways, for example, as 6843456 + 35844169 = 2616^2 + 5987^2 .

It is not a de Polignac number, because 42687625 - 2¹³ = 42679433 is a prime.

It is a super-3 number, since 3×42687625³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170626 + ... + 170875.

It is an arithmetic number, because the mean of its divisors is an integer number (6659289).

Almost surely, 2^42687625 is an apocalyptic number.

It is an amenable number.

42687625 is a deficient number, since it is larger than the sum of its proper divisors (10586687).

42687625 is an equidigital number, since it uses as much as digits as its factorization.

42687625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341516 (or 341506 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 42687625 is about 6533.5767386631. The cubic root of 42687625 is about 349.4893914994.

Subtracting 42687625 from its reverse (52678624), we obtain a palindrome (9990999).

The spelling of 42687625 in words is "forty-two million, six hundred eighty-seven thousand, six hundred twenty-five".