125773891 has 2 divisors, whose sum is σ = 125773892. Its totient is φ = 125773890.

The previous prime is 125773877. The next prime is 125773919. The reversal of 125773891 is 198377521.

It is a weak prime.

It is an emirp because it is prime and its reverse (198377521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125773891 - 2⁷ = 125773763 is a prime.

It is not a weakly prime, because it can be changed into another prime (125773811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62886945 + 62886946.

It is an arithmetic number, because the mean of its divisors is an integer number (62886946).

Almost surely, 2^125773891 is an apocalyptic number.

125773891 is a deficient number, since it is larger than the sum of its proper divisors (1).

125773891 is an equidigital number, since it uses as much as digits as its factorization.

125773891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 43.

The square root of 125773891 is about 11214.8959424508. The cubic root of 125773891 is about 501.0297325127.

The spelling of 125773891 in words is "one hundred twenty-five million, seven hundred seventy-three thousand, eight hundred ninety-one".