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25131012982 = 267187544873
BaseRepresentation
bin10111011001111011…
…001101001101110110
32101212102102201211121
4113121323031031312
5402432014403412
615313420454154
71546525041265
oct273173151566
971772381747
1025131012982
11a726890019
124a543aa35a
1324a67180aa
14130592c5dc
159c1451107
hex5d9ecd376

25131012982 has 8 divisors (see below), whose sum is σ = 38259154296. Its totient is φ = 12377961552.

The previous prime is 25131012971. The next prime is 25131012989. The reversal of 25131012982 is 28921013152.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25131012989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93772303 + ... + 93772570.

It is an arithmetic number, because the mean of its divisors is an integer number (4782394287).

Almost surely, 225131012982 is an apocalyptic number.

25131012982 is a deficient number, since it is larger than the sum of its proper divisors (13128141314).

25131012982 is a wasteful number, since it uses less digits than its factorization.

25131012982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187544942.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 25131012982 in words is "twenty-five billion, one hundred thirty-one million, twelve thousand, nine hundred eighty-two".

Divisors: 1 2 67 134 187544873 375089746 12565506491 25131012982