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25068381 = 313642779
BaseRepresentation
bin101111110100…
…0001101011101
31202011121100120
41133220031131
522404142011
62253145153
7423035442
oct137501535
952147316
1025068381
1113172278
12848b1b9
135269380
1434879c9
152302a06
hex17e835d

25068381 has 8 divisors (see below), whose sum is σ = 35995680. Its totient is φ = 15426672.

The previous prime is 25068349. The next prime is 25068409. The reversal of 25068381 is 18386052.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25068381 - 25 = 25068349 is a prime.

It is a super-2 number, since 2×250683812 = 1256847451922322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25068331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321351 + ... + 321428.

It is an arithmetic number, because the mean of its divisors is an integer number (4499460).

Almost surely, 225068381 is an apocalyptic number.

It is an amenable number.

25068381 is a deficient number, since it is larger than the sum of its proper divisors (10927299).

25068381 is a wasteful number, since it uses less digits than its factorization.

25068381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642795.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 25068381 is about 5006.8334304229. The cubic root of 25068381 is about 292.6681274643.

The spelling of 25068381 in words is "twenty-five million, sixty-eight thousand, three hundred eighty-one".

Divisors: 1 3 13 39 642779 1928337 8356127 25068381