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125680067 = 808715541
BaseRepresentation
bin1110111110110…
…11100111000011
322202111012122022
413133123213003
5224133230232
620245432055
73054156122
oct737334703
9282435568
10125680067
1164a41327
123610b62b
1320065406
1412997ab9
15b078812
hex77db9c3

125680067 has 4 divisors (see below), whose sum is σ = 125703696. Its totient is φ = 125656440.

The previous prime is 125680063. The next prime is 125680091. The reversal of 125680067 is 760086521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 760086521 = 769988409.

It is a cyclic number.

It is not a de Polignac number, because 125680067 - 22 = 125680063 is a prime.

It is a super-2 number, since 2×1256800672 = 31590958482248978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125680063) 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, 317 + ... + 15857.

It is an arithmetic number, because the mean of its divisors is an integer number (31425924).

Almost surely, 2125680067 is an apocalyptic number.

125680067 is a deficient number, since it is larger than the sum of its proper divisors (23629).

125680067 is an equidigital number, since it uses as much as digits as its factorization.

125680067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23628.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 125680067 is about 11210.7121540070. The cubic root of 125680067 is about 500.9051165394.

The spelling of 125680067 in words is "one hundred twenty-five million, six hundred eighty thousand, sixty-seven".

Divisors: 1 8087 15541 125680067