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24240025 = 528211181
BaseRepresentation
bin101110001110…
…1111110011001
31200121112001201
41130131332121
522201140100
62223314201
7413015425
oct134357631
950545051
1024240025
1112756987
12814b961
135039314
14330db85
1521dc36a
hex171df99

24240025 has 12 divisors (see below), whose sum is σ = 30119724. Its totient is φ = 19352000.

The previous prime is 24240023. The next prime is 24240031. The reversal of 24240025 is 52004242.

It can be written as a sum of positive squares in 6 ways, for example, as 4096 + 24235929 = 64^2 + 4923^2 .

It is not a de Polignac number, because 24240025 - 21 = 24240023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24239984 and 24240011.

It is not an unprimeable number, because it can be changed into a prime (24240023) 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, 19935 + ... + 21115.

It is an arithmetic number, because the mean of its divisors is an integer number (2509977).

Almost surely, 224240025 is an apocalyptic number.

24240025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

24240025 is a deficient number, since it is larger than the sum of its proper divisors (5879699).

24240025 is a wasteful number, since it uses less digits than its factorization.

24240025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012 (or 2007 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 24240025 is about 4923.4159889248. The cubic root of 24240025 is about 289.4083259577.

Adding to 24240025 its reverse (52004242), we get a palindrome (76244267).

The spelling of 24240025 in words is "twenty-four million, two hundred forty thousand, twenty-five".

Divisors: 1 5 25 821 1181 4105 5905 20525 29525 969601 4848005 24240025