524320225 has 72 divisors (see below), whose sum is σ = 785019200. Its totient is φ = 344995200.

The previous prime is 524320207. The next prime is 524320241. The reversal of 524320225 is 522023425.

It is a happy number.

It is not a de Polignac number, because 524320225 - 2¹⁵ = 524287457 is a prime.

It is a super-3 number, since 3×524320225³ (a number of 27 digits) contains 333 as substring.

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 524320225.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2634676 + ... + 2634874.

Almost surely, 2^524320225 is an apocalyptic number.

524320225 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

524320225 is a deficient number, since it is larger than the sum of its proper divisors (260698975).

524320225 is a wasteful number, since it uses less digits than its factorization.

524320225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 524320225 is about 22898.0397632636. The cubic root of 524320225 is about 806.3659921655.

The spelling of 524320225 in words is "five hundred twenty-four million, three hundred twenty thousand, two hundred twenty-five".