42525253 has 4 divisors (see below), whose sum is σ = 43246080. Its totient is φ = 41804428.

The previous prime is 42525251. The next prime is 42525257. The reversal of 42525253 is 35252524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42525253 - 2¹ = 42525251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42525251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360325 + ... + 360442.

It is an arithmetic number, because the mean of its divisors is an integer number (10811520).

Almost surely, 2^42525253 is an apocalyptic number.

It is an amenable number.

42525253 is a deficient number, since it is larger than the sum of its proper divisors (720827).

42525253 is an equidigital number, since it uses as much as digits as its factorization.

42525253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720826.

The product of its digits is 12000, while the sum is 28.

The square root of 42525253 is about 6521.1389342660. The cubic root of 42525253 is about 349.0457079238.

Adding to 42525253 its reverse (35252524), we get a palindrome (77777777).

It can be divided in two parts, 42525 and 253, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 42525253 in words is "forty-two million, five hundred twenty-five thousand, two hundred fifty-three".