42525351 has 32 divisors (see below), whose sum is σ = 69315840. Its totient is φ = 25552800.

The previous prime is 42525349. The next prime is 42525361. The reversal of 42525351 is 15352524.

It is a happy number.

It is not a de Polignac number, because 42525351 - 2¹ = 42525349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42525311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38361 + ... + 39453.

It is an arithmetic number, because the mean of its divisors is an integer number (2166120).

Almost surely, 2^42525351 is an apocalyptic number.

42525351 is a deficient number, since it is larger than the sum of its proper divisors (26790489).

42525351 is a wasteful number, since it uses less digits than its factorization.

42525351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244 (or 1238 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 42525351 is about 6521.1464482865. The cubic root of 42525351 is about 349.0459760504.

Adding to 42525351 its reverse (15352524), we get a palindrome (57877875).

The spelling of 42525351 in words is "forty-two million, five hundred twenty-five thousand, three hundred fifty-one".