525440252 has 6 divisors (see below), whose sum is σ = 919520448. Its totient is φ = 262720124.

The previous prime is 525440249. The next prime is 525440261. The reversal of 525440252 is 252044525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65680028 + ... + 65680035.

It is an arithmetic number, because the mean of its divisors is an integer number (153253408).

Almost surely, 2^525440252 is an apocalyptic number.

It is an amenable number.

525440252 is a deficient number, since it is larger than the sum of its proper divisors (394080196).

525440252 is a wasteful number, since it uses less digits than its factorization.

525440252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131360067 (or 131360065 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 525440252 is about 22922.4835478183. The cubic root of 525440252 is about 806.9397568948.

Adding to 525440252 its reverse (252044525), we get a palindrome (777484777).

The spelling of 525440252 in words is "five hundred twenty-five million, four hundred forty thousand, two hundred fifty-two".