125558491 has 2 divisors, whose sum is σ = 125558492. Its totient is φ = 125558490.

The previous prime is 125558473. The next prime is 125558509. The reversal of 125558491 is 194855521.

It is a balanced prime because it is at equal distance from previous prime (125558473) and next prime (125558509).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125558491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125558591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62779245 + 62779246.

It is an arithmetic number, because the mean of its divisors is an integer number (62779246).

Almost surely, 2^125558491 is an apocalyptic number.

125558491 is a deficient number, since it is larger than the sum of its proper divisors (1).

125558491 is an equidigital number, since it uses as much as digits as its factorization.

125558491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 40.

The square root of 125558491 is about 11205.2885281906. The cubic root of 125558491 is about 500.7435483901.

The spelling of 125558491 in words is "one hundred twenty-five million, five hundred fifty-eight thousand, four hundred ninety-one".