725142529 has 4 divisors (see below), whose sum is σ = 732322260. Its totient is φ = 717962800.

The previous prime is 725142527. The next prime is 725142533. The reversal of 725142529 is 925241527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 431808400 + 293334129 = 20780^2 + 17127^2 .

It is a cyclic number.

It is not a de Polignac number, because 725142529 - 2¹ = 725142527 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725142527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3589714 + ... + 3589915.

It is an arithmetic number, because the mean of its divisors is an integer number (183080565).

Almost surely, 2^725142529 is an apocalyptic number.

It is an amenable number.

725142529 is a deficient number, since it is larger than the sum of its proper divisors (7179731).

725142529 is a wasteful number, since it uses less digits than its factorization.

725142529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7179730.

The product of its digits is 50400, while the sum is 37.

The square root of 725142529 is about 26928.4706026911. The cubic root of 725142529 is about 898.4097551643.

The spelling of 725142529 in words is "seven hundred twenty-five million, one hundred forty-two thousand, five hundred twenty-nine".