125951897 has 2 divisors, whose sum is σ = 125951898. Its totient is φ = 125951896.

The previous prime is 125951879. The next prime is 125951899. The reversal of 125951897 is 798159521.

It is a happy number.

Together with previous prime (125951879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119880601 + 6071296 = 10949^2 + 2464^2 .

It is an emirp because it is prime and its reverse (798159521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125951897 - 2¹⁰ = 125950873 is a prime.

Together with 125951899, 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 (125951899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62975948 + 62975949.

It is an arithmetic number, because the mean of its divisors is an integer number (62975949).

Almost surely, 2^125951897 is an apocalyptic number.

It is an amenable number.

125951897 is a deficient number, since it is larger than the sum of its proper divisors (1).

125951897 is an equidigital number, since it uses as much as digits as its factorization.

125951897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 47.

The square root of 125951897 is about 11222.8292778604. The cubic root of 125951897 is about 501.2659878442.

The spelling of 125951897 in words is "one hundred twenty-five million, nine hundred fifty-one thousand, eight hundred ninety-seven".