125972279 has 2 divisors, whose sum is σ = 125972280. Its totient is φ = 125972278.

The previous prime is 125972269. The next prime is 125972293. The reversal of 125972279 is 972279521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125972279 - 2⁴ = 125972263 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125972269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62986139 + 62986140.

It is an arithmetic number, because the mean of its divisors is an integer number (62986140).

Almost surely, 2^125972279 is an apocalyptic number.

125972279 is a deficient number, since it is larger than the sum of its proper divisors (1).

125972279 is an equidigital number, since it uses as much as digits as its factorization.

125972279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 125972279 is about 11223.7373009172. The cubic root of 125972279 is about 501.2930252888.

The spelling of 125972279 in words is "one hundred twenty-five million, nine hundred seventy-two thousand, two hundred seventy-nine".