42436525 has 6 divisors (see below), whose sum is σ = 52621322. Its totient is φ = 33949200.

The previous prime is 42436507. The next prime is 42436529. The reversal of 42436525 is 52563424.

It can be written as a sum of positive squares in 3 ways, for example, as 212521 + 42224004 = 461^2 + 6498^2 .

It is not a de Polignac number, because 42436525 - 2⁷ = 42436397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42436529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 848706 + ... + 848755.

Almost surely, 2^42436525 is an apocalyptic number.

It is an amenable number.

42436525 is a deficient number, since it is larger than the sum of its proper divisors (10184797).

42436525 is a wasteful number, since it uses less digits than its factorization.

42436525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697471 (or 1697466 counting only the distinct ones).

The product of its digits is 28800, while the sum is 31.

The square root of 42436525 is about 6514.3322758361. The cubic root of 42436525 is about 348.8027801740.

Adding to 42436525 its reverse (52563424), we get a palindrome (94999949).

The spelling of 42436525 in words is "forty-two million, four hundred thirty-six thousand, five hundred twenty-five".