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25413380 = 2251270669
BaseRepresentation
bin110000011110…
…0011100000100
31202211010121022
41200330130010
523001212010
62304410312
7426003326
oct140743404
952733538
1025413380
11133884a3
128616998
13535a405
143537616
15236ed55
hex183c704

25413380 has 12 divisors (see below), whose sum is σ = 53368140. Its totient is φ = 10165344.

The previous prime is 25413379. The next prime is 25413383. The reversal of 25413380 is 8331452.

It can be written as a sum of positive squares in 2 ways, for example, as 5982916 + 19430464 = 2446^2 + 4408^2 .

It is not an unprimeable number, because it can be changed into a prime (25413383) 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, 635315 + ... + 635354.

It is an arithmetic number, because the mean of its divisors is an integer number (4447345).

Almost surely, 225413380 is an apocalyptic number.

25413380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25413380 is an abundant number, since it is smaller than the sum of its proper divisors (27954760).

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

25413380 is a wasteful number, since it uses less digits than its factorization.

25413380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270678 (or 1270676 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 25413380 is about 5041.1685153345. The cubic root of 25413380 is about 294.0046122034.

The spelling of 25413380 in words is "twenty-five million, four hundred thirteen thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 1270669 2541338 5082676 6353345 12706690 25413380