125899573 has 2 divisors, whose sum is σ = 125899574. Its totient is φ = 125899572.

The previous prime is 125899559. The next prime is 125899583. The reversal of 125899573 is 375998521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116791249 + 9108324 = 10807^2 + 3018^2 .

It is an emirp because it is prime and its reverse (375998521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125899573 - 2⁵ = 125899541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125899583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62949786 + 62949787.

It is an arithmetic number, because the mean of its divisors is an integer number (62949787).

Almost surely, 2^125899573 is an apocalyptic number.

It is an amenable number.

125899573 is a deficient number, since it is larger than the sum of its proper divisors (1).

125899573 is an equidigital number, since it uses as much as digits as its factorization.

125899573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 49.

The square root of 125899573 is about 11220.4978944787. The cubic root of 125899573 is about 501.1965648475.

The spelling of 125899573 in words is "one hundred twenty-five million, eight hundred ninety-nine thousand, five hundred seventy-three".