125516623 has 2 divisors, whose sum is σ = 125516624. Its totient is φ = 125516622.

The previous prime is 125516597. The next prime is 125516647. The reversal of 125516623 is 326615521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125516623 - 2¹³ = 125508431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125516653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62758311 + 62758312.

It is an arithmetic number, because the mean of its divisors is an integer number (62758312).

Almost surely, 2^125516623 is an apocalyptic number.

125516623 is a deficient number, since it is larger than the sum of its proper divisors (1).

125516623 is an equidigital number, since it uses as much as digits as its factorization.

125516623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 125516623 is about 11203.4201474371. The cubic root of 125516623 is about 500.6878838643.

The spelling of 125516623 in words is "one hundred twenty-five million, five hundred sixteen thousand, six hundred twenty-three".