626425421 has 8 divisors (see below), whose sum is σ = 661966080. Its totient is φ = 591141888.

The previous prime is 626425379. The next prime is 626425427. The reversal of 626425421 is 124524626.

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 626425421 - 2¹⁴ = 626409037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626425427) 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 in 7 ways as a sum of consecutive naturals, for example, 59261 + ... + 69026.

It is an arithmetic number, because the mean of its divisors is an integer number (82745760).

Almost surely, 2^626425421 is an apocalyptic number.

It is an amenable number.

626425421 is a deficient number, since it is larger than the sum of its proper divisors (35540659).

626425421 is a wasteful number, since it uses less digits than its factorization.

626425421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128563.

The product of its digits is 23040, while the sum is 32.

The square root of 626425421 is about 25028.4921839091. The cubic root of 626425421 is about 855.6374626636.

The spelling of 626425421 in words is "six hundred twenty-six million, four hundred twenty-five thousand, four hundred twenty-one".