425637958609 has 8 divisors (see below), whose sum is σ = 451025140680. Its totient is φ = 400289627136.

The previous prime is 425637958583. The next prime is 425637958639. The reversal of 425637958609 is 906859736524.

It can be written as a sum of positive squares in 4 ways, for example, as 288634339009 + 137003619600 = 537247^2 + 370140^2 .

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 425637958609 - 2¹¹ = 425637956561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425637958639) 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, 9690084 + ... + 9733909.

It is an arithmetic number, because the mean of its divisors is an integer number (56378142585).

Almost surely, 2^425637958609 is an apocalyptic number.

It is an amenable number.

425637958609 is a deficient number, since it is larger than the sum of its proper divisors (25387182071).

425637958609 is a wasteful number, since it uses less digits than its factorization.

425637958609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19425299.

The product of its (nonzero) digits is 97977600, while the sum is 64.

The spelling of 425637958609 in words is "four hundred twenty-five billion, six hundred thirty-seven million, nine hundred fifty-eight thousand, six hundred nine".