125279291 has 2 divisors, whose sum is σ = 125279292. Its totient is φ = 125279290.

The previous prime is 125279269. The next prime is 125279303. The reversal of 125279291 is 192972521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125279291 - 2¹⁸ = 125017147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125279221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62639645 + 62639646.

It is an arithmetic number, because the mean of its divisors is an integer number (62639646).

Almost surely, 2^125279291 is an apocalyptic number.

125279291 is a deficient number, since it is larger than the sum of its proper divisors (1).

125279291 is an equidigital number, since it uses as much as digits as its factorization.

125279291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 38.

The square root of 125279291 is about 11192.8231916706. The cubic root of 125279291 is about 500.3721109981.

The spelling of 125279291 in words is "one hundred twenty-five million, two hundred seventy-nine thousand, two hundred ninety-one".