125415247 has 2 divisors, whose sum is σ = 125415248. Its totient is φ = 125415246.

The previous prime is 125415217. The next prime is 125415263. The reversal of 125415247 is 742514521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125415247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125415217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62707623 + 62707624.

It is an arithmetic number, because the mean of its divisors is an integer number (62707624).

Almost surely, 2^125415247 is an apocalyptic number.

125415247 is a deficient number, since it is larger than the sum of its proper divisors (1).

125415247 is an equidigital number, since it uses as much as digits as its factorization.

125415247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 31.

The square root of 125415247 is about 11198.8949008373. The cubic root of 125415247 is about 500.5530507109.

Adding to 125415247 its reverse (742514521), we get a palindrome (867929768).

The spelling of 125415247 in words is "one hundred twenty-five million, four hundred fifteen thousand, two hundred forty-seven".