125280919 has 2 divisors, whose sum is σ = 125280920. Its totient is φ = 125280918.

The previous prime is 125280913. The next prime is 125280929. The reversal of 125280919 is 919082521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125280919 - 2¹¹ = 125278871 is a prime.

It is a super-2 number, since 2×125280919² = 31390617330969122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125280913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62640459 + 62640460.

It is an arithmetic number, because the mean of its divisors is an integer number (62640460).

Almost surely, 2^125280919 is an apocalyptic number.

125280919 is a deficient number, since it is larger than the sum of its proper divisors (1).

125280919 is an equidigital number, since it uses as much as digits as its factorization.

125280919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 125280919 is about 11192.8959166071. The cubic root of 125280919 is about 500.3742784281.

The spelling of 125280919 in words is "one hundred twenty-five million, two hundred eighty thousand, nine hundred nineteen".