125727551 has 2 divisors, whose sum is σ = 125727552. Its totient is φ = 125727550.

The previous prime is 125727533. The next prime is 125727593. The reversal of 125727551 is 155727521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125727551 - 2¹⁴ = 125711167 is a prime.

It is a Chen prime.

It is equal to p_7149149 and since 125727551 and 7149149 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125727451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62863775 + 62863776.

It is an arithmetic number, because the mean of its divisors is an integer number (62863776).

Almost surely, 2^125727551 is an apocalyptic number.

125727551 is a deficient number, since it is larger than the sum of its proper divisors (1).

125727551 is an equidigital number, since it uses as much as digits as its factorization.

125727551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24500, while the sum is 35.

The square root of 125727551 is about 11212.8297498892. The cubic root of 125727551 is about 500.9681919984.

The spelling of 125727551 in words is "one hundred twenty-five million, seven hundred twenty-seven thousand, five hundred fifty-one".