125419517 has 2 divisors, whose sum is σ = 125419518. Its totient is φ = 125419516.

The previous prime is 125419501. The next prime is 125419597. The reversal of 125419517 is 715914521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65108761 + 60310756 = 8069^2 + 7766^2 .

It is a cyclic number.

It is not a de Polignac number, because 125419517 - 2⁴ = 125419501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125419597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62709758 + 62709759.

It is an arithmetic number, because the mean of its divisors is an integer number (62709759).

Almost surely, 2^125419517 is an apocalyptic number.

It is an amenable number.

125419517 is a deficient number, since it is larger than the sum of its proper divisors (1).

125419517 is an equidigital number, since it uses as much as digits as its factorization.

125419517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 35.

The square root of 125419517 is about 11199.0855430254. The cubic root of 125419517 is about 500.5587314059.

The spelling of 125419517 in words is "one hundred twenty-five million, four hundred nineteen thousand, five hundred seventeen".