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268990725 = 3523586543
BaseRepresentation
bin10000000010000…
…111100100000101
3200202011010220110
4100002013210011
51022330200400
642405223233
76444245343
oct2002074405
9622133813
10268990725
11128924793
1276101b19
1343961613
1427a20993
1518935e50
hex10087905

268990725 has 12 divisors (see below), whose sum is σ = 444731456. Its totient is φ = 143461680.

The previous prime is 268990723. The next prime is 268990739. The reversal of 268990725 is 527099862.

It is not a de Polignac number, because 268990725 - 21 = 268990723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268990723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1793197 + ... + 1793346.

Almost surely, 2268990725 is an apocalyptic number.

268990725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

268990725 is a deficient number, since it is larger than the sum of its proper divisors (175740731).

268990725 is a wasteful number, since it uses less digits than its factorization.

268990725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586556 (or 3586551 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 268990725 is about 16400.9367110540. The cubic root of 268990725 is about 645.5240617961.

The spelling of 268990725 in words is "two hundred sixty-eight million, nine hundred ninety thousand, seven hundred twenty-five".

Divisors: 1 3 5 15 25 75 3586543 10759629 17932715 53798145 89663575 268990725