279425 has 6 divisors (see below), whose sum is σ = 346518. Its totient is φ = 223520.

The previous prime is 279421. The next prime is 279431. The reversal of 279425 is 524972.

It can be written as a sum of positive squares in 3 ways, for example, as 55696 + 223729 = 236^2 + 473^2 .

It is not a de Polignac number, because 279425 - 2² = 279421 is a prime.

It is a d-powerful number, because it can be written as 2¹⁴ + 7 + 4⁴ + 9 + 2¹⁸ + 5⁴ .

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 279425.

It is not an unprimeable number, because it can be changed into a prime (279421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5564 + ... + 5613.

It is an arithmetic number, because the mean of its divisors is an integer number (57753).

2²⁷⁹⁴²⁵ is an apocalyptic number.

279425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

279425 is a deficient number, since it is larger than the sum of its proper divisors (67093).

279425 is a wasteful number, since it uses less digits than its factorization.

279425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11187 (or 11182 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 279425 is about 528.6066590576. The cubic root of 279425 is about 65.3765130587.

The spelling of 279425 in words is "two hundred seventy-nine thousand, four hundred twenty-five".