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25142680 = 2352327329
BaseRepresentation
bin101111111101…
…0010110011000
31202022101021101
41133322112120
522414031210
62254521144
7423465163
oct137722630
952271241
1025142680
1113213082
1285061b4
135294134
1434a6ada
152319a3a
hex17fa598

25142680 has 32 divisors (see below), whose sum is σ = 59032800. Its totient is φ = 9619456.

The previous prime is 25142639. The next prime is 25142693. The reversal of 25142680 is 8624152.

It is a congruent number.

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, 12745 + ... + 14584.

It is an arithmetic number, because the mean of its divisors is an integer number (1844775).

Almost surely, 225142680 is an apocalyptic number.

25142680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25142680 is an abundant number, since it is smaller than the sum of its proper divisors (33890120).

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

25142680 is a wasteful number, since it uses less digits than its factorization.

25142680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27363 (or 27359 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 25142680 is about 5014.2477003036. The cubic root of 25142680 is about 292.9569840596.

The spelling of 25142680 in words is "twenty-five million, one hundred forty-two thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 23 40 46 92 115 184 230 460 920 27329 54658 109316 136645 218632 273290 546580 628567 1093160 1257134 2514268 3142835 5028536 6285670 12571340 25142680