42545525 has 24 divisors (see below), whose sum is σ = 58040928. Its totient is φ = 30680000.

The previous prime is 42545507. The next prime is 42545539. The reversal of 42545525 is 52554524.

It is not a de Polignac number, because 42545525 - 2¹⁴ = 42529141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42545491 and 42545500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35435 + ... + 36615.

It is an arithmetic number, because the mean of its divisors is an integer number (2418372).

Almost surely, 2^42545525 is an apocalyptic number.

It is an amenable number.

42545525 is a deficient number, since it is larger than the sum of its proper divisors (15495403).

42545525 is a wasteful number, since it uses less digits than its factorization.

42545525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333 (or 1328 counting only the distinct ones).

The product of its digits is 40000, while the sum is 32.

The square root of 42545525 is about 6522.6930787827. The cubic root of 42545525 is about 349.1011630556.

It can be divided in two parts, 4254 and 5525, that added together give a palindrome (9779).

The spelling of 42545525 in words is "forty-two million, five hundred forty-five thousand, five hundred twenty-five".