125444491 has 2 divisors, whose sum is σ = 125444492. Its totient is φ = 125444490.

The previous prime is 125444489. The next prime is 125444497. The reversal of 125444491 is 194444521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125444491 - 2¹ = 125444489 is a prime.

Together with 125444489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125444497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62722245 + 62722246.

It is an arithmetic number, because the mean of its divisors is an integer number (62722246).

Almost surely, 2^125444491 is an apocalyptic number.

125444491 is a deficient number, since it is larger than the sum of its proper divisors (1).

125444491 is an equidigital number, since it uses as much as digits as its factorization.

125444491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 34.

The square root of 125444491 is about 11200.2004892770. The cubic root of 125444491 is about 500.5919535720.

The spelling of 125444491 in words is "one hundred twenty-five million, four hundred forty-four thousand, four hundred ninety-one".