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25343340 = 223511194347
BaseRepresentation
bin110000010101…
…1010101101100
31202200120112020
41200223111230
522441441330
62303110140
7425262201
oct140532554
952616466
1025343340
111333a910
1285a2350
135334579
143519ca8
152359210
hex182b56c

25343340 has 192 divisors, whose sum is σ = 85155840. Its totient is φ = 5564160.

The previous prime is 25343327. The next prime is 25343341. The reversal of 25343340 is 4334352.

It is a self number, because there is not a number n which added to its sum of digits gives 25343340.

It is not an unprimeable number, because it can be changed into a prime (25343341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 539197 + ... + 539243.

It is an arithmetic number, because the mean of its divisors is an integer number (443520).

Almost surely, 225343340 is an apocalyptic number.

25343340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25343340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42577920).

25343340 is an abundant number, since it is smaller than the sum of its proper divisors (59812500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25343340 is a wasteful number, since it uses less digits than its factorization.

25343340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 25343340 is about 5034.2169202369. The cubic root of 25343340 is about 293.7342686611.

Adding to 25343340 its reverse (4334352), we get a palindrome (29677692).

The spelling of 25343340 in words is "twenty-five million, three hundred forty-three thousand, three hundred forty".