725511 has 8 divisors (see below), whose sum is σ = 972144. Its totient is φ = 481280.

The previous prime is 725507. The next prime is 725519. The reversal of 725511 is 115527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 725511 - 2² = 725507 is a prime.

It is a super-2 number, since 2×725511² = 1052732422242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301 + ... + 1241.

It is an arithmetic number, because the mean of its divisors is an integer number (121518).

2⁷²⁵⁵¹¹ is an apocalyptic number.

725511 is a deficient number, since it is larger than the sum of its proper divisors (246633).

725511 is a wasteful number, since it uses less digits than its factorization.

725511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201.

The product of its digits is 350, while the sum is 21.

The square root of 725511 is about 851.7693349728. The cubic root of 725511 is about 89.8561900833.

The spelling of 725511 in words is "seven hundred twenty-five thousand, five hundred eleven".