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25680668832001 = 178981120928907
BaseRepresentation
bin1011101011011001111110…
…01001001011000100000001
310100221001021222001221120201
411311230333021023010001
511331223002210111001
6130341311510005201
75260236625263151
oct565547711130401
9110831258057521
1025680668832001
118201124075597
122a69104046801
1311438a4885b91
1464ad457a6761
152e802e4ab501
hex175b3f24b101

25680668832001 has 16 divisors (see below), whose sum is σ = 27530722739520. Its totient is φ = 23868998714880.

The previous prime is 25680668831959. The next prime is 25680668832047. The reversal of 25680668832001 is 10023886608652.

It is a cyclic number.

It is not a de Polignac number, because 25680668832001 - 213 = 25680668823809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25680668832061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9237411 + ... + 11691496.

It is an arithmetic number, because the mean of its divisors is an integer number (1720670171220).

Almost surely, 225680668832001 is an apocalyptic number.

It is an amenable number.

25680668832001 is a deficient number, since it is larger than the sum of its proper divisors (1850053907519).

25680668832001 is a wasteful number, since it uses less digits than its factorization.

25680668832001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20929824.

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 25680668832001 in words is "twenty-five trillion, six hundred eighty billion, six hundred sixty-eight million, eight hundred thirty-two thousand, one".

Divisors: 1 17 89 811 1513 13787 72179 1227043 20928907 355791419 1862672723 16973343577 31665436291 288546840809 1510627578353 25680668832001