247725 has 24 divisors (see below), whose sum is σ = 456320. Its totient is φ = 131760.

The previous prime is 247717. The next prime is 247729. The reversal of 247725 is 527742.

It is not a de Polignac number, because 247725 - 2³ = 247717 is a prime.

It is a super-2 number, since 2×247725² = 122735351250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 13.

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 247725.

It is not an unprimeable number, because it can be changed into a prime (247729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492 + ... + 858.

2²⁴⁷⁷²⁵ is an apocalyptic number.

247725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

247725 is a deficient number, since it is larger than the sum of its proper divisors (208595).

247725 is a wasteful number, since it uses less digits than its factorization.

247725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 375 counting only the distinct ones).

The product of its digits is 3920, while the sum is 27.

The square root of 247725 is about 497.7198006911. The cubic root of 247725 is about 62.8043818869.

The spelling of 247725 in words is "two hundred forty-seven thousand, seven hundred twenty-five".