42212025 has 36 divisors (see below), whose sum is σ = 77382448. Its totient is φ = 21984480.

The previous prime is 42212017. The next prime is 42212033. The reversal of 42212025 is 52021224.

It is an interprime number because it is at equal distance from previous prime (42212017) and next prime (42212033).

It is not a de Polignac number, because 42212025 - 2³ = 42212017 is a prime.

It is a super-3 number, since 3×42212025³ (a number of 24 digits) contains 333 as substring.

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 = 42211989 and 42212007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7494 + ... + 11856.

Almost surely, 2^42212025 is an apocalyptic number.

42212025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42212025 is a deficient number, since it is larger than the sum of its proper divisors (35170423).

42212025 is a wasteful number, since it uses less digits than its factorization.

42212025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422 (or 4414 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 42212025 is about 6497.0781894633. The cubic root of 42212025 is about 348.1866072111.

Adding to 42212025 its reverse (52021224), we get a palindrome (94233249).

The spelling of 42212025 in words is "forty-two million, two hundred twelve thousand, twenty-five".