Search a number
-
+
24681025 = 521758073
BaseRepresentation
bin101111000100…
…1101001000001
31201102221000001
41132021221001
522304243100
62241000001
7416533225
oct136115101
951387001
1024681025
1112a28246
128323001
135161c75
1433c6785
152277d6a
hex1789a41

24681025 has 12 divisors (see below), whose sum is σ = 32405292. Its totient is φ = 18583040.

The previous prime is 24680993. The next prime is 24681031. The reversal of 24681025 is 52018642.

It is a Cunningham number, because it is equal to 49682+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1937664 + 22743361 = 1392^2 + 4769^2 .

It is not a de Polignac number, because 24681025 - 25 = 24680993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24680984 and 24681002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28612 + ... + 29461.

It is an arithmetic number, because the mean of its divisors is an integer number (2700441).

Almost surely, 224681025 is an apocalyptic number.

24681025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

24681025 is a deficient number, since it is larger than the sum of its proper divisors (7724267).

24681025 is a wasteful number, since it uses less digits than its factorization.

24681025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58100 (or 58095 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 24681025 is about 4968.0001006441. Note that the first 3 decimals coincide. The cubic root of 24681025 is about 291.1528622995.

Adding to 24681025 its reverse (52018642), we get a palindrome (76699667).

The spelling of 24681025 in words is "twenty-four million, six hundred eighty-one thousand, twenty-five".

Divisors: 1 5 17 25 85 425 58073 290365 987241 1451825 4936205 24681025