125512291 has 2 divisors, whose sum is σ = 125512292. Its totient is φ = 125512290.

The previous prime is 125512267. The next prime is 125512333. The reversal of 125512291 is 192215521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125512291 - 2⁹ = 125511779 is a prime.

It is not a weakly prime, because it can be changed into another prime (125512201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62756145 + 62756146.

It is an arithmetic number, because the mean of its divisors is an integer number (62756146).

Almost surely, 2^125512291 is an apocalyptic number.

125512291 is a deficient number, since it is larger than the sum of its proper divisors (1).

125512291 is an equidigital number, since it uses as much as digits as its factorization.

125512291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 28.

The square root of 125512291 is about 11203.2268119502. The cubic root of 125512291 is about 500.6821236581.

The spelling of 125512291 in words is "one hundred twenty-five million, five hundred twelve thousand, two hundred ninety-one".