42471525 has 24 divisors (see below), whose sum is σ = 74352384. Its totient is φ = 21318400.

The previous prime is 42471521. The next prime is 42471529. The reversal of 42471525 is 52517424.

It is an interprime number because it is at equal distance from previous prime (42471521) and next prime (42471529).

It is not a de Polignac number, because 42471525 - 2² = 42471521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42471492 and 42471501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42471521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15381 + ... + 17930.

It is an arithmetic number, because the mean of its divisors is an integer number (3098016).

Almost surely, 2^42471525 is an apocalyptic number.

It is an amenable number.

42471525 is a deficient number, since it is larger than the sum of its proper divisors (31880859).

42471525 is a wasteful number, since it uses less digits than its factorization.

42471525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33341 (or 33336 counting only the distinct ones).

The product of its digits is 11200, while the sum is 30.

The square root of 42471525 is about 6517.0181064656. The cubic root of 42471525 is about 348.8986468249.

Adding to 42471525 its reverse (52517424), we get a palindrome (94988949).

The spelling of 42471525 in words is "forty-two million, four hundred seventy-one thousand, five hundred twenty-five".