725024161 has 4 divisors (see below), whose sum is σ = 741885232. Its totient is φ = 708163092.

The previous prime is 725024129. The next prime is 725024191. The reversal of 725024161 is 161420527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 725024161 - 2⁵ = 725024129 is a prime.

It is a pancake number, because a pancake can be divided into 725024161 parts by 38079 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725024191) 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, 8430471 + ... + 8430556.

It is an arithmetic number, because the mean of its divisors is an integer number (185471308).

Almost surely, 2^725024161 is an apocalyptic number.

It is an amenable number.

725024161 is a deficient number, since it is larger than the sum of its proper divisors (16861071).

725024161 is a wasteful number, since it uses less digits than its factorization.

725024161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16861070.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 725024161 is about 26926.2726904412. The cubic root of 725024161 is about 898.3608687967.

Adding to 725024161 its reverse (161420527), we get a palindrome (886444688).

The spelling of 725024161 in words is "seven hundred twenty-five million, twenty-four thousand, one hundred sixty-one".