42525145 has 8 divisors (see below), whose sum is σ = 54955656. Its totient is φ = 31403136.

The previous prime is 42525127. The next prime is 42525157. The reversal of 42525145 is 54152524.

It can be written as a sum of positive squares in 4 ways, for example, as 8838729 + 33686416 = 2973^2 + 5804^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42525145 - 2¹¹ = 42523097 is a prime.

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, 327052 + ... + 327181.

It is an arithmetic number, because the mean of its divisors is an integer number (6869457).

Almost surely, 2^42525145 is an apocalyptic number.

It is an amenable number.

42525145 is a deficient number, since it is larger than the sum of its proper divisors (12430511).

42525145 is a wasteful number, since it uses less digits than its factorization.

42525145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654251.

The product of its digits is 8000, while the sum is 28.

The square root of 42525145 is about 6521.1306534987. The cubic root of 42525145 is about 349.0454124369.

Adding to 42525145 its reverse (54152524), we get a palindrome (96677669).

The spelling of 42525145 in words is "forty-two million, five hundred twenty-five thousand, one hundred forty-five".