125691847 has 2 divisors, whose sum is σ = 125691848. Its totient is φ = 125691846.

The previous prime is 125691833. The next prime is 125691869. The reversal of 125691847 is 748196521.

It is a weak prime.

It is an emirp because it is prime and its reverse (748196521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125691847 - 2⁷ = 125691719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125691877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62845923 + 62845924.

It is an arithmetic number, because the mean of its divisors is an integer number (62845924).

Almost surely, 2^125691847 is an apocalyptic number.

125691847 is a deficient number, since it is larger than the sum of its proper divisors (1).

125691847 is an equidigital number, since it uses as much as digits as its factorization.

125691847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 43.

The square root of 125691847 is about 11211.2375320479. The cubic root of 125691847 is about 500.9207660057.

The spelling of 125691847 in words is "one hundred twenty-five million, six hundred ninety-one thousand, eight hundred forty-seven".