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25430380 = 2252834493
BaseRepresentation
bin110000100000…
…0100101101100
31202211222220221
41201000211230
523002233010
62305021124
7426104023
oct141004554
952758827
1025430380
111339a248
1286247a4
135365081
14353d8ba
152374dda
hex184096c

25430380 has 24 divisors (see below), whose sum is σ = 53604432. Its totient is φ = 10133952.

The previous prime is 25430371. The next prime is 25430401. The reversal of 25430380 is 8303452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3414 + ... + 7906.

It is an arithmetic number, because the mean of its divisors is an integer number (2233518).

Almost surely, 225430380 is an apocalyptic number.

25430380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25430380 is an abundant number, since it is smaller than the sum of its proper divisors (28174052).

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

25430380 is a wasteful number, since it uses less digits than its factorization.

25430380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785 (or 4783 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 25430380 is about 5042.8543504646. The cubic root of 25430380 is about 294.0701546375.

The spelling of 25430380 in words is "twenty-five million, four hundred thirty thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 283 566 1132 1415 2830 4493 5660 8986 17972 22465 44930 89860 1271519 2543038 5086076 6357595 12715190 25430380