425551456557 has 24 divisors (see below), whose sum is σ = 654605545464. Its totient is φ = 265469236224.

The previous prime is 425551456541. The next prime is 425551456567. The reversal of 425551456557 is 755654155524.

425551456557 is a `hidden beast` number, since 4 + 25 + 5 + 5 + 1 + 4 + 565 + 57 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 136431241956 + 289120214601 = 369366^2 + 537699^2 .

It is not a de Polignac number, because 425551456557 - 2⁴ = 425551456541 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425551456567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8012208 + ... + 8065145.

It is an arithmetic number, because the mean of its divisors is an integer number (27275231061).

Almost surely, 2^425551456557 is an apocalyptic number.

It is an amenable number.

425551456557 is a deficient number, since it is larger than the sum of its proper divisors (229054088907).

425551456557 is a wasteful number, since it uses less digits than its factorization.

425551456557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16077549 (or 16077546 counting only the distinct ones).

The product of its digits is 21000000, while the sum is 54.

The spelling of 425551456557 in words is "four hundred twenty-five billion, five hundred fifty-one million, four hundred fifty-six thousand, five hundred fifty-seven".