125891461 has 2 divisors, whose sum is σ = 125891462. Its totient is φ = 125891460.

The previous prime is 125891453. The next prime is 125891497. The reversal of 125891461 is 164198521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124746561 + 1144900 = 11169^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 125891461 - 2³ = 125891453 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 125891461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125891431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62945730 + 62945731.

It is an arithmetic number, because the mean of its divisors is an integer number (62945731).

Almost surely, 2^125891461 is an apocalyptic number.

It is an amenable number.

125891461 is a deficient number, since it is larger than the sum of its proper divisors (1).

125891461 is an equidigital number, since it uses as much as digits as its factorization.

125891461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 37.

The square root of 125891461 is about 11220.1364073705. The cubic root of 125891461 is about 501.1858001993.

The spelling of 125891461 in words is "one hundred twenty-five million, eight hundred ninety-one thousand, four hundred sixty-one".