725534523 has 64 divisors (see below), whose sum is σ = 1264000000. Its totient is φ = 411124896.

The previous prime is 725534521. The next prime is 725534531. The reversal of 725534523 is 325435527.

725534523 is a `hidden beast` number, since 72 + 5 + 534 + 52 + 3 = 666.

It is not a de Polignac number, because 725534523 - 2¹ = 725534521 is a prime.

It is a super-3 number, since 3×725534523³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725534521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1453728 + ... + 1454226.

It is an arithmetic number, because the mean of its divisors is an integer number (19750000).

Almost surely, 2^725534523 is an apocalyptic number.

725534523 is a deficient number, since it is larger than the sum of its proper divisors (538465477).

725534523 is a wasteful number, since it uses less digits than its factorization.

725534523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 666 counting only the distinct ones).

The product of its digits is 126000, while the sum is 36.

The square root of 725534523 is about 26935.7480497572. The cubic root of 725534523 is about 898.5716119856.

The spelling of 725534523 in words is "seven hundred twenty-five million, five hundred thirty-four thousand, five hundred twenty-three".