725051 has 4 divisors (see below), whose sum is σ = 737400. Its totient is φ = 712704.

The previous prime is 725041. The next prime is 725057. The reversal of 725051 is 150527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150527 = 13 ⋅11579.

It is a cyclic number.

It is not a de Polignac number, because 725051 - 2¹⁴ = 708667 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725051.

It is not an unprimeable number, because it can be changed into a prime (725057) 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, 6086 + ... + 6203.

It is an arithmetic number, because the mean of its divisors is an integer number (184350).

2⁷²⁵⁰⁵¹ is an apocalyptic number.

725051 is a deficient number, since it is larger than the sum of its proper divisors (12349).

725051 is a wasteful number, since it uses less digits than its factorization.

725051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12348.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 725051 is about 851.4992660009. The cubic root of 725051 is about 89.8371953857.

Adding to 725051 its reverse (150527), we get a palindrome (875578).

The spelling of 725051 in words is "seven hundred twenty-five thousand, fifty-one".