125204279 has 2 divisors, whose sum is σ = 125204280. Its totient is φ = 125204278.

The previous prime is 125204273. The next prime is 125204309. The reversal of 125204279 is 972402521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125204279 is a prime.

It is a super-2 number, since 2×125204279² = 31352222959819682, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125204273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62602139 + 62602140.

It is an arithmetic number, because the mean of its divisors is an integer number (62602140).

Almost surely, 2^125204279 is an apocalyptic number.

125204279 is a deficient number, since it is larger than the sum of its proper divisors (1).

125204279 is an equidigital number, since it uses as much as digits as its factorization.

125204279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 125204279 is about 11189.4717927166. The cubic root of 125204279 is about 500.2722237615.

The spelling of 125204279 in words is "one hundred twenty-five million, two hundred four thousand, two hundred seventy-nine".