725525 has 6 divisors (see below), whose sum is σ = 899682. Its totient is φ = 580400.

The previous prime is 725519. The next prime is 725531. The reversal of 725525 is 525527.

It is an interprime number because it is at equal distance from previous prime (725519) and next prime (725531).

It can be written as a sum of positive squares in 3 ways, for example, as 217156 + 508369 = 466^2 + 713^2 .

It is not a de Polignac number, because 725525 - 2¹⁴ = 709141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725494 and 725503.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725525.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14486 + ... + 14535.

It is an arithmetic number, because the mean of its divisors is an integer number (149947).

2⁷²⁵⁵²⁵ is an apocalyptic number.

It is an amenable number.

725525 is a deficient number, since it is larger than the sum of its proper divisors (174157).

725525 is a wasteful number, since it uses less digits than its factorization.

725525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29031 (or 29026 counting only the distinct ones).

The product of its digits is 3500, while the sum is 26.

The square root of 725525 is about 851.7775531205. Note that the first 3 decimals coincide. The cubic root of 725525 is about 89.8567680569.

The spelling of 725525 in words is "seven hundred twenty-five thousand, five hundred twenty-five".