125199461 has 2 divisors, whose sum is σ = 125199462. Its totient is φ = 125199460.

The previous prime is 125199443. The next prime is 125199463. The reversal of 125199461 is 164991521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86136961 + 39062500 = 9281^2 + 6250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125199461 is a prime.

It is a Sophie Germain prime.

Together with 125199463, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125199463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62599730 + 62599731.

It is an arithmetic number, because the mean of its divisors is an integer number (62599731).

Almost surely, 2^125199461 is an apocalyptic number.

It is an amenable number.

125199461 is a deficient number, since it is larger than the sum of its proper divisors (1).

125199461 is an equidigital number, since it uses as much as digits as its factorization.

125199461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 38.

The square root of 125199461 is about 11189.2564989815. The cubic root of 125199461 is about 500.2658066686.

The spelling of 125199461 in words is "one hundred twenty-five million, one hundred ninety-nine thousand, four hundred sixty-one".