125633279 has 2 divisors, whose sum is σ = 125633280. Its totient is φ = 125633278.

The previous prime is 125633269. The next prime is 125633309. The reversal of 125633279 is 972336521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125633279 - 2²⁰ = 124584703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125633269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62816639 + 62816640.

It is an arithmetic number, because the mean of its divisors is an integer number (62816640).

Almost surely, 2^125633279 is an apocalyptic number.

125633279 is a deficient number, since it is larger than the sum of its proper divisors (1).

125633279 is an equidigital number, since it uses as much as digits as its factorization.

125633279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 38.

The square root of 125633279 is about 11208.6252056173. The cubic root of 125633279 is about 500.8429500717.

The spelling of 125633279 in words is "one hundred twenty-five million, six hundred thirty-three thousand, two hundred seventy-nine".