247425 has 12 divisors (see below), whose sum is σ = 409200. Its totient is φ = 131920.

The previous prime is 247421. The next prime is 247433. The reversal of 247425 is 524742.

It is not a de Polignac number, because 247425 - 2² = 247421 is a prime.

It is a super-2 number, since 2×247425² = 122438261250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247395 and 247404.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247425.

It is not an unprimeable number, because it can be changed into a prime (247421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1575 + ... + 1724.

It is an arithmetic number, because the mean of its divisors is an integer number (34100).

2²⁴⁷⁴²⁵ is an apocalyptic number.

247425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

247425 is a deficient number, since it is larger than the sum of its proper divisors (161775).

247425 is a wasteful number, since it uses less digits than its factorization.

247425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312 (or 3307 counting only the distinct ones).

The product of its digits is 2240, while the sum is 24.

The square root of 247425 is about 497.4183350059. The cubic root of 247425 is about 62.7790191857.

The spelling of 247425 in words is "two hundred forty-seven thousand, four hundred twenty-five".