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25330780 = 2251266539
BaseRepresentation
bin110000010100…
…0010001011100
31202122221022001
41200220101130
522441041110
62302532044
7425210446
oct140502134
952587261
1025330780
1113331432
128597024
13532b937
143515496
15235563a
hex182845c

25330780 has 12 divisors (see below), whose sum is σ = 53194680. Its totient is φ = 10132304.

The previous prime is 25330759. The next prime is 25330783. The reversal of 25330780 is 8703352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25330783) 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, 633250 + ... + 633289.

It is an arithmetic number, because the mean of its divisors is an integer number (4432890).

Almost surely, 225330780 is an apocalyptic number.

25330780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25330780 is an abundant number, since it is smaller than the sum of its proper divisors (27863900).

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

25330780 is a wasteful number, since it uses less digits than its factorization.

25330780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266548 (or 1266546 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 25330780 is about 5032.9693025092. The cubic root of 25330780 is about 293.6857363570.

The spelling of 25330780 in words is "twenty-five million, three hundred thirty thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 1266539 2533078 5066156 6332695 12665390 25330780