525398923 has 24 divisors (see below), whose sum is σ = 650147472. Its totient is φ = 421876224.

The previous prime is 525398921. The next prime is 525398941. The reversal of 525398923 is 329893525.

It is a happy number.

It is not a de Polignac number, because 525398923 - 2¹ = 525398921 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525398921) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 192736 + ... + 195442.

It is an arithmetic number, because the mean of its divisors is an integer number (27089478).

Almost surely, 2^525398923 is an apocalyptic number.

525398923 is a deficient number, since it is larger than the sum of its proper divisors (124748549).

525398923 is a wasteful number, since it uses less digits than its factorization.

525398923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971 (or 2964 counting only the distinct ones).

The product of its digits is 583200, while the sum is 46.

The square root of 525398923 is about 22921.5820352785. The cubic root of 525398923 is about 806.9185994701.

The spelling of 525398923 in words is "five hundred twenty-five million, three hundred ninety-eight thousand, nine hundred twenty-three".