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25083920 = 245313549
BaseRepresentation
bin101111110110…
…0000000010000
31202012101200002
41133230000100
522410141140
62253345132
7423131651
oct137540020
952171602
1025083920
1113182a14
1284981a8
135273474
14348d528
152307415
hex17ec010

25083920 has 20 divisors (see below), whose sum is σ = 58320300. Its totient is φ = 10033536.

The previous prime is 25083917. The next prime is 25083931. The reversal of 25083920 is 2938052.

It can be written as a sum of positive squares in 2 ways, for example, as 7376656 + 17707264 = 2716^2 + 4208^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156695 + ... + 156854.

It is an arithmetic number, because the mean of its divisors is an integer number (2916015).

Almost surely, 225083920 is an apocalyptic number.

25083920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25083920 is an abundant number, since it is smaller than the sum of its proper divisors (33236380).

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

25083920 is a wasteful number, since it uses less digits than its factorization.

25083920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313562 (or 313556 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 25083920 is about 5008.3849692291. The cubic root of 25083920 is about 292.7285865035.

The spelling of 25083920 in words is "twenty-five million, eighty-three thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 313549 627098 1254196 1567745 2508392 3135490 5016784 6270980 12541960 25083920