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125561543 is a prime number
BaseRepresentation
bin1110111101111…
…10101011000111
322202021012001112
413132332223013
5224120432133
620243115235
73053153432
oct736765307
9282235045
10125561543
1164970278
1236072b1b
1320023493
1412966819
15b053648
hex77beac7

125561543 has 2 divisors, whose sum is σ = 125561544. Its totient is φ = 125561542.

The previous prime is 125561537. The next prime is 125561549. The reversal of 125561543 is 345165521.

It is a balanced prime because it is at equal distance from previous prime (125561537) and next prime (125561549).

It is a cyclic number.

It is not a de Polignac number, because 125561543 - 26 = 125561479 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125561549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62780771 + 62780772.

It is an arithmetic number, because the mean of its divisors is an integer number (62780772).

Almost surely, 2125561543 is an apocalyptic number.

125561543 is a deficient number, since it is larger than the sum of its proper divisors (1).

125561543 is an equidigital number, since it uses as much as digits as its factorization.

125561543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 32.

The square root of 125561543 is about 11205.4247130575. The cubic root of 125561543 is about 500.7476056146.

The spelling of 125561543 in words is "one hundred twenty-five million, five hundred sixty-one thousand, five hundred forty-three".