42427925 has 12 divisors (see below), whose sum is σ = 52724676. Its totient is φ = 33868800.

The previous prime is 42427921. The next prime is 42427993. The reversal of 42427925 is 52972424.

It can be written as a sum of positive squares in 6 ways, for example, as 1378276 + 41049649 = 1174^2 + 6407^2 .

It is not a de Polignac number, because 42427925 - 2² = 42427921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42427921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11957 + ... + 15093.

It is an arithmetic number, because the mean of its divisors is an integer number (4393723).

Almost surely, 2^42427925 is an apocalyptic number.

It is an amenable number.

42427925 is a deficient number, since it is larger than the sum of its proper divisors (10296751).

42427925 is a wasteful number, since it uses less digits than its factorization.

42427925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688 (or 3683 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 42427925 is about 6513.6721593890. The cubic root of 42427925 is about 348.7792163017.

It can be divided in two parts, 4242 and 7925, that added together give a cube (12167 = 23³).

The spelling of 42427925 in words is "forty-two million, four hundred twenty-seven thousand, nine hundred twenty-five".