125464513 has 2 divisors, whose sum is σ = 125464514. Its totient is φ = 125464512.

The previous prime is 125464511. The next prime is 125464529. The reversal of 125464513 is 315464521.

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., 100942209 + 24522304 = 10047^2 + 4952^2 .

It is an emirp because it is prime and its reverse (315464521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125464513 - 2¹ = 125464511 is a prime.

Together with 125464511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125464511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62732256 + 62732257.

It is an arithmetic number, because the mean of its divisors is an integer number (62732257).

Almost surely, 2^125464513 is an apocalyptic number.

It is an amenable number.

125464513 is a deficient number, since it is larger than the sum of its proper divisors (1).

125464513 is an equidigital number, since it uses as much as digits as its factorization.

125464513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 31.

The square root of 125464513 is about 11201.0942768999. The cubic root of 125464513 is about 500.6185850561.

The spelling of 125464513 in words is "one hundred twenty-five million, four hundred sixty-four thousand, five hundred thirteen".