100125449 has 2 divisors, whose sum is σ = 100125450. Its totient is φ = 100125448.

The previous prime is 100125433. The next prime is 100125451. The reversal of 100125449 is 944521001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94867600 + 5257849 = 9740^2 + 2293^2 .

It is an emirp because it is prime and its reverse (944521001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100125449 - 2⁴ = 100125433 is a prime.

Together with 100125451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100125409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50062724 + 50062725.

It is an arithmetic number, because the mean of its divisors is an integer number (50062725).

Almost surely, 2^100125449 is an apocalyptic number.

It is an amenable number.

100125449 is a deficient number, since it is larger than the sum of its proper divisors (1).

100125449 is an equidigital number, since it uses as much as digits as its factorization.

100125449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 100125449 is about 10006.2704840515. The cubic root of 100125449 is about 464.3528964806.

The spelling of 100125449 in words is "one hundred million, one hundred twenty-five thousand, four hundred forty-nine".