42252425 has 6 divisors (see below), whose sum is σ = 52393038. Its totient is φ = 33801920.

The previous prime is 42252341. The next prime is 42252451. The reversal of 42252425 is 52425224.

It can be written as a sum of positive squares in 3 ways, for example, as 430336 + 41822089 = 656^2 + 6467^2 .

It is not a de Polignac number, because 42252425 - 2¹⁰ = 42251401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42252394 and 42252403.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 845024 + ... + 845073.

It is an arithmetic number, because the mean of its divisors is an integer number (8732173).

It is a self-describing number.

Almost surely, 2^42252425 is an apocalyptic number.

It is an amenable number.

42252425 is a deficient number, since it is larger than the sum of its proper divisors (10140613).

42252425 is a wasteful number, since it uses less digits than its factorization.

42252425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690107 (or 1690102 counting only the distinct ones).

The product of its digits is 6400, while the sum is 26.

The square root of 42252425 is about 6500.1865357850. The cubic root of 42252425 is about 348.2976518220.

Adding to 42252425 its reverse (52425224), we get a palindrome (94677649).

The spelling of 42252425 in words is "forty-two million, two hundred fifty-two thousand, four hundred twenty-five".