42313525 has 6 divisors (see below), whose sum is σ = 52468802. Its totient is φ = 33850800.

The previous prime is 42313511. The next prime is 42313547. The reversal of 42313525 is 52531324.

42313525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1787569 + 40525956 = 1337^2 + 6366^2 .

It is not a de Polignac number, because 42313525 - 2⁹ = 42313013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1692541 = 42313525 / (4 + 2 + 3 + 1 + 3 + 5 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42313525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 846246 + ... + 846295.

Almost surely, 2^42313525 is an apocalyptic number.

It is an amenable number.

42313525 is a deficient number, since it is larger than the sum of its proper divisors (10155277).

42313525 is a wasteful number, since it uses less digits than its factorization.

42313525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692551 (or 1692546 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 42313525 is about 6504.8847030520. The cubic root of 42313525 is about 348.4654586546.

Adding to 42313525 its reverse (52531324), we get a palindrome (94844849).

The spelling of 42313525 in words is "forty-two million, three hundred thirteen thousand, five hundred twenty-five".