24775 has 6 divisors (see below), whose sum is σ = 30752. Its totient is φ = 19800.

The previous prime is 24767. The next prime is 24781. The reversal of 24775 is 57742.

It is not a de Polignac number, because 24775 - 2³ = 24767 is a prime.

It is a super-2 number, since 2×24775² = 1227601250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 991 = 24775 / (2 + 4 + 7 + 7 + 5).

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 471 + ... + 520.

2²⁴⁷⁷⁵ is an apocalyptic number.

24775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

24775 is a deficient number, since it is larger than the sum of its proper divisors (5977).

24775 is an equidigital number, since it uses as much as digits as its factorization.

24775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001 (or 996 counting only the distinct ones).

The product of its digits is 1960, while the sum is 25.

The square root of 24775 is about 157.4007623870. The cubic root of 24775 is about 29.1521923646.

The spelling of 24775 in words is "twenty-four thousand, seven hundred seventy-five".