42417025 has 24 divisors (see below), whose sum is σ = 63279680. Its totient is φ = 27552960.

The previous prime is 42417017. The next prime is 42417041. The reversal of 42417025 is 52071424.

It is not a de Polignac number, because 42417025 - 2³ = 42417017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3054 + ... + 9703.

Almost surely, 2^42417025 is an apocalyptic number.

It is an amenable number.

42417025 is a deficient number, since it is larger than the sum of its proper divisors (20862655).

42417025 is a wasteful number, since it uses less digits than its factorization.

42417025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12793 (or 12788 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 42417025 is about 6512.8354040310. The cubic root of 42417025 is about 348.7493458876.

Adding to 42417025 its reverse (52071424), we get a palindrome (94488449).

The spelling of 42417025 in words is "forty-two million, four hundred seventeen thousand, twenty-five".