525320331 has 16 divisors (see below), whose sum is σ = 721260960. Its totient is φ = 339886080.

The previous prime is 525320321. The next prime is 525320353. The reversal of 525320331 is 133023525.

It is a happy number.

It is not a de Polignac number, because 525320331 - 2¹⁵ = 525287563 is a prime.

It is a super-2 number, since 2×525320331² = 551922900323899122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (525320311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12675 + ... + 34803.

It is an arithmetic number, because the mean of its divisors is an integer number (45078810).

Almost surely, 2^525320331 is an apocalyptic number.

525320331 is a deficient number, since it is larger than the sum of its proper divisors (195940629).

525320331 is a wasteful number, since it uses less digits than its factorization.

525320331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22366.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 525320331 is about 22919.8676043297. The cubic root of 525320331 is about 806.8783630541.

Adding to 525320331 its reverse (133023525), we get a palindrome (658343856).

The spelling of 525320331 in words is "five hundred twenty-five million, three hundred twenty thousand, three hundred thirty-one".