42717025 has 12 divisors (see below), whose sum is σ = 57044092. Its totient is φ = 31544640.

The previous prime is 42717023. The next prime is 42717043. The reversal of 42717025 is 52071724.

It can be written as a sum of positive squares in 6 ways, for example, as 4857616 + 37859409 = 2204^2 + 6153^2 .

It is not a de Polignac number, because 42717025 - 2¹ = 42717023 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42716984 and 42717002.

It is not an unprimeable number, because it can be changed into a prime (42717023) 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, 65394 + ... + 66043.

Almost surely, 2^42717025 is an apocalyptic number.

It is an amenable number.

42717025 is a deficient number, since it is larger than the sum of its proper divisors (14327067).

42717025 is a wasteful number, since it uses less digits than its factorization.

42717025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131460 (or 131455 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 42717025 is about 6535.8262675809. The cubic root of 42717025 is about 349.5696070196.

Adding to 42717025 its reverse (52071724), we get a palindrome (94788749).

The spelling of 42717025 in words is "forty-two million, seven hundred seventeen thousand, twenty-five".