125535257 has 2 divisors, whose sum is σ = 125535258. Its totient is φ = 125535256.

The previous prime is 125535247. The next prime is 125535271. The reversal of 125535257 is 752535521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70241161 + 55294096 = 8381^2 + 7436^2 .

It is a cyclic number.

It is not a de Polignac number, because 125535257 - 2⁸ = 125535001 is a prime.

It is equal to p_7138871 and since 125535257 and 7138871 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (125535247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62767628 + 62767629.

It is an arithmetic number, because the mean of its divisors is an integer number (62767629).

Almost surely, 2^125535257 is an apocalyptic number.

It is an amenable number.

125535257 is a deficient number, since it is larger than the sum of its proper divisors (1).

125535257 is an equidigital number, since it uses as much as digits as its factorization.

125535257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52500, while the sum is 35.

The square root of 125535257 is about 11204.2517376217. The cubic root of 125535257 is about 500.7126597496.

The spelling of 125535257 in words is "one hundred twenty-five million, five hundred thirty-five thousand, two hundred fifty-seven".