525245242 has 4 divisors (see below), whose sum is σ = 787867866. Its totient is φ = 262622620.

The previous prime is 525245221. The next prime is 525245267. The reversal of 525245242 is 242542525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 432681601 + 92563641 = 20801^2 + 9621^2 .

It is a super-4 number, since 4×525245242⁴ (a number of 36 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131311309 + ... + 131311312.

Almost surely, 2^525245242 is an apocalyptic number.

525245242 is a deficient number, since it is larger than the sum of its proper divisors (262622624).

525245242 is a wasteful number, since it uses less digits than its factorization.

525245242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262622623.

The product of its digits is 32000, while the sum is 31.

The square root of 525245242 is about 22918.2294691366. The cubic root of 525245242 is about 806.8399163053.

Adding to 525245242 its reverse (242542525), we get a palindrome (767787767).

The spelling of 525245242 in words is "five hundred twenty-five million, two hundred forty-five thousand, two hundred forty-two".