125137489 has 2 divisors, whose sum is σ = 125137490. Its totient is φ = 125137488.

The previous prime is 125137417. The next prime is 125137499. The reversal of 125137489 is 984731521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124701889 + 435600 = 11167^2 + 660^2 .

It is a cyclic number.

It is not a de Polignac number, because 125137489 - 2⁷ = 125137361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125137499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62568744 + 62568745.

It is an arithmetic number, because the mean of its divisors is an integer number (62568745).

Almost surely, 2^125137489 is an apocalyptic number.

It is an amenable number.

125137489 is a deficient number, since it is larger than the sum of its proper divisors (1).

125137489 is an equidigital number, since it uses as much as digits as its factorization.

125137489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 125137489 is about 11186.4868926755. The cubic root of 125137489 is about 500.1832514962.

It can be divided in two parts, 12513 and 7489, that added together give a palindrome (20002).

The spelling of 125137489 in words is "one hundred twenty-five million, one hundred thirty-seven thousand, four hundred eighty-nine".