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25102668 = 2232091889
BaseRepresentation
bin101111111000…
…0100101001100
31202020100101110
41133300211030
522411241133
62254012020
7423240423
oct137604514
952210343
1025102668
1113196008
1284a7010
13527bb66
1434962ba
15230cc63
hex17f094c

25102668 has 12 divisors (see below), whose sum is σ = 58572920. Its totient is φ = 8367552.

The previous prime is 25102657. The next prime is 25102673. The reversal of 25102668 is 86620152.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045933 + ... + 1045956.

Almost surely, 225102668 is an apocalyptic number.

It is an amenable number.

25102668 is an abundant number, since it is smaller than the sum of its proper divisors (33470252).

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

25102668 is a wasteful number, since it uses less digits than its factorization.

25102668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091896 (or 2091894 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 25102668 is about 5010.2562808703. The cubic root of 25102668 is about 292.8014978722.

The spelling of 25102668 in words is "twenty-five million, one hundred two thousand, six hundred sixty-eight".

Divisors: 1 2 3 4 6 12 2091889 4183778 6275667 8367556 12551334 25102668