125319811 has 2 divisors, whose sum is σ = 125319812. Its totient is φ = 125319810.

The previous prime is 125319809. The next prime is 125319823. The reversal of 125319811 is 118913521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125319811 - 2¹ = 125319809 is a prime.

Together with 125319809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125319841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62659905 + 62659906.

It is an arithmetic number, because the mean of its divisors is an integer number (62659906).

Almost surely, 2^125319811 is an apocalyptic number.

125319811 is a deficient number, since it is larger than the sum of its proper divisors (1).

125319811 is an equidigital number, since it uses as much as digits as its factorization.

125319811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 31.

The square root of 125319811 is about 11194.6331337833. The cubic root of 125319811 is about 500.4260515237.

The spelling of 125319811 in words is "one hundred twenty-five million, three hundred nineteen thousand, eight hundred eleven".