42225125 has 32 divisors (see below), whose sum is σ = 57957120. Its totient is φ = 30571200.

The previous prime is 42225107. The next prime is 42225133. The reversal of 42225125 is 52152224.

It is not a de Polignac number, because 42225125 - 2⁸ = 42224869 is a prime.

It is a super-2 number, since 2×42225125² = 3565922362531250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42225125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54239 + ... + 55011.

It is an arithmetic number, because the mean of its divisors is an integer number (1811160).

Almost surely, 2^42225125 is an apocalyptic number.

It is an amenable number.

42225125 is a deficient number, since it is larger than the sum of its proper divisors (15731995).

42225125 is a wasteful number, since it uses less digits than its factorization.

42225125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 820 counting only the distinct ones).

The product of its digits is 1600, while the sum is 23.

The square root of 42225125 is about 6498.0862567374. The cubic root of 42225125 is about 348.2226220101. Note that the first 3 decimals are identical.

Adding to 42225125 its reverse (52152224), we get a palindrome (94377349).

The spelling of 42225125 in words is "forty-two million, two hundred twenty-five thousand, one hundred twenty-five".