125012637619 has 2 divisors, whose sum is σ = 125012637620. Its totient is φ = 125012637618.

The previous prime is 125012637593. The next prime is 125012637677. The reversal of 125012637619 is 916736210521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125012637619 - 2¹¹ = 125012635571 is a prime.

It is a super-2 number, since 2×125012637619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125012637119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62506318809 + 62506318810.

It is an arithmetic number, because the mean of its divisors is an integer number (62506318810).

Almost surely, 2^125012637619 is an apocalyptic number.

125012637619 is a deficient number, since it is larger than the sum of its proper divisors (1).

125012637619 is an equidigital number, since it uses as much as digits as its factorization.

125012637619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 125012637619 in words is "one hundred twenty-five billion, twelve million, six hundred thirty-seven thousand, six hundred nineteen".