42007525 has 12 divisors (see below), whose sum is σ = 59530912. Its totient is φ = 28805040.

The previous prime is 42007523. The next prime is 42007529. The reversal of 42007525 is 52570024.

It is not a de Polignac number, because 42007525 - 2¹ = 42007523 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42007525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42007523) 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, 119847 + ... + 120196.

Almost surely, 2^42007525 is an apocalyptic number.

It is an amenable number.

42007525 is a deficient number, since it is larger than the sum of its proper divisors (17523387).

42007525 is a wasteful number, since it uses less digits than its factorization.

42007525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240060 (or 240055 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 42007525 is about 6481.3212387599. The cubic root of 42007525 is about 347.6234228525.

Adding to 42007525 its reverse (52570024), we get a palindrome (94577549).

The spelling of 42007525 in words is "forty-two million, seven thousand, five hundred twenty-five".