24980405 has 4 divisors (see below), whose sum is σ = 29976492. Its totient is φ = 19984320.

The previous prime is 24980401. The next prime is 24980407. The reversal of 24980405 is 50408942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50408942 = 2 ⋅25204471.

It can be written as a sum of positive squares in 2 ways, for example, as 6507601 + 18472804 = 2551^2 + 4298^2 .

It is not a de Polignac number, because 24980405 - 2² = 24980401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24980401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2498036 + ... + 2498045.

It is an arithmetic number, because the mean of its divisors is an integer number (7494123).

Almost surely, 2^24980405 is an apocalyptic number.

It is an amenable number.

24980405 is a deficient number, since it is larger than the sum of its proper divisors (4996087).

24980405 is an equidigital number, since it uses as much as digits as its factorization.

24980405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4996086.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 24980405 is about 4998.0401158854. The cubic root of 24980405 is about 292.3253590164.

The spelling of 24980405 in words is "twenty-four million, nine hundred eighty thousand, four hundred five".