125289091 has 2 divisors, whose sum is σ = 125289092. Its totient is φ = 125289090.

The previous prime is 125289083. The next prime is 125289121. The reversal of 125289091 is 190982521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125289091 - 2³ = 125289083 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125289091.

It is not a weakly prime, because it can be changed into another prime (125289001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62644545 + 62644546.

It is an arithmetic number, because the mean of its divisors is an integer number (62644546).

Almost surely, 2^125289091 is an apocalyptic number.

125289091 is a deficient number, since it is larger than the sum of its proper divisors (1).

125289091 is an equidigital number, since it uses as much as digits as its factorization.

125289091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 125289091 is about 11193.2609636334. The cubic root of 125289091 is about 500.3851578973.

The spelling of 125289091 in words is "one hundred twenty-five million, two hundred eighty-nine thousand, ninety-one".