625870843210405 has 8 divisors (see below), whose sum is σ = 808817705071992. Its totient is φ = 462181545755328.

The previous prime is 625870843210363. The next prime is 625870843210409. The reversal of 625870843210405 is 504012348078526.

It is a happy number.

625870843210405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 24851590908769 + 601019252301636 = 4985137^2 + 24515694^2 .

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 625870843210405 - 2¹⁷ = 625870843079333 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 (625870843210409) 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, 4814391101554 + ... + 4814391101683.

It is an arithmetic number, because the mean of its divisors is an integer number (101102213133999).

Almost surely, 2^{625870843210405} is an apocalyptic number.

625870843210405 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

625870843210405 is a deficient number, since it is larger than the sum of its proper divisors (182946861861587).

625870843210405 is a wasteful number, since it uses less digits than its factorization.

625870843210405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9628782203255.

The product of its (nonzero) digits is 12902400, while the sum is 55.

The spelling of 625870843210405 in words is "six hundred twenty-five trillion, eight hundred seventy billion, eight hundred forty-three million, two hundred ten thousand, four hundred five".