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125188201 = 891406609
BaseRepresentation
bin1110111011000…
…11100001101001
322201120012221001
413131203201221
5224022010301
620231115001
73050040115
oct735434151
9281505831
10125188201
1164735826
1235b12a61
131cc22578
14128aa745
15aeccc01
hex7763869

125188201 has 4 divisors (see below), whose sum is σ = 126594900. Its totient is φ = 123781504.

The previous prime is 125188183. The next prime is 125188243. The reversal of 125188201 is 102881521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64722025 + 60466176 = 8045^2 + 7776^2 .

It is a cyclic number.

It is not a de Polignac number, because 125188201 - 27 = 125188073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125188201.

It is not an unprimeable number, because it can be changed into a prime (125188291) 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, 703216 + ... + 703393.

It is an arithmetic number, because the mean of its divisors is an integer number (31648725).

Almost surely, 2125188201 is an apocalyptic number.

It is an amenable number.

125188201 is a deficient number, since it is larger than the sum of its proper divisors (1406699).

125188201 is an equidigital number, since it uses as much as digits as its factorization.

125188201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406698.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 125188201 is about 11188.7533264435. The cubic root of 125188201 is about 500.2508088355.

The spelling of 125188201 in words is "one hundred twenty-five million, one hundred eighty-eight thousand, two hundred one".

Divisors: 1 89 1406609 125188201