612125063905 has 4 divisors (see below), whose sum is σ = 734550076692. Its totient is φ = 489700051120.

The previous prime is 612125063903. The next prime is 612125063971. The reversal of 612125063905 is 509360521216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 426482139136 + 185642924769 = 653056^2 + 430863^2 .

It is not a de Polignac number, because 612125063905 - 2¹ = 612125063903 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612125063903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61212506386 + ... + 61212506395.

It is an arithmetic number, because the mean of its divisors is an integer number (183637519173).

Almost surely, 2^612125063905 is an apocalyptic number.

It is an amenable number.

612125063905 is a deficient number, since it is larger than the sum of its proper divisors (122425012787).

612125063905 is a wasteful number, since it uses less digits than its factorization.

612125063905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122425012786.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 612125063905 in words is "six hundred twelve billion, one hundred twenty-five million, sixty-three thousand, nine hundred five".