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125507 is a prime number
BaseRepresentation
bin11110101001000011
320101011102
4132221003
513004012
62405015
71031624
oct365103
9211142
10125507
1186328
126076b
1345185
1433a4b
15272c2
hex1ea43

125507 has 2 divisors, whose sum is σ = 125508. Its totient is φ = 125506.

The previous prime is 125497. The next prime is 125509. The reversal of 125507 is 705521.

It is a strong prime.

It is an emirp because it is prime and its reverse (705521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125507 - 216 = 59971 is a prime.

Together with 125509, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 125507.

It is not a weakly prime, because it can be changed into another prime (125509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62753 + 62754.

It is an arithmetic number, because the mean of its divisors is an integer number (62754).

2125507 is an apocalyptic number.

125507 is a deficient number, since it is larger than the sum of its proper divisors (1).

125507 is an equidigital number, since it uses as much as digits as its factorization.

125507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 125507 is about 354.2696712958. The cubic root of 125507 is about 50.0675088102.

The spelling of 125507 in words is "one hundred twenty-five thousand, five hundred seven".