125280421 has 8 divisors (see below), whose sum is σ = 143685824. Its totient is φ = 107002080.

The previous prime is 125280413. The next prime is 125280431. The reversal of 125280421 is 124082521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125280421 - 2³ = 125280413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125280431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29640 + ... + 33601.

It is an arithmetic number, because the mean of its divisors is an integer number (17960728).

Almost surely, 2^125280421 is an apocalyptic number.

It is an amenable number.

125280421 is a deficient number, since it is larger than the sum of its proper divisors (18405403).

125280421 is an equidigital number, since it uses as much as digits as its factorization.

125280421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63531.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 125280421 is about 11192.8736703315. The cubic root of 125280421 is about 500.3736154202.

The spelling of 125280421 in words is "one hundred twenty-five million, two hundred eighty thousand, four hundred twenty-one".