125357406523 has 2 divisors, whose sum is σ = 125357406524. Its totient is φ = 125357406522.

The previous prime is 125357406521. The next prime is 125357406533. The reversal of 125357406523 is 325604753521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125357406523 - 2¹ = 125357406521 is a prime.

Together with 125357406521, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 125357406523.

It is not a weakly prime, because it can be changed into another prime (125357406521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62678703261 + 62678703262.

It is an arithmetic number, because the mean of its divisors is an integer number (62678703262).

Almost surely, 2^125357406523 is an apocalyptic number.

125357406523 is a deficient number, since it is larger than the sum of its proper divisors (1).

125357406523 is an equidigital number, since it uses as much as digits as its factorization.

125357406523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756000, while the sum is 43.

The spelling of 125357406523 in words is "one hundred twenty-five billion, three hundred fifty-seven million, four hundred six thousand, five hundred twenty-three".