43625345405557 has 8 divisors (see below), whose sum is σ = 44614306450584. Its totient is φ = 42646961484288.

The previous prime is 43625345405507. The next prime is 43625345405563. The reversal of 43625345405557 is 75550454352634.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 354327324516 + 43271018081041 = 595254^2 + 6578071^2 .

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 43625345405557 - 2²³ = 43625337016949 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 (43625345405507) 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, 2644272598 + ... + 2644289095.

It is an arithmetic number, because the mean of its divisors is an integer number (5576788306323).

Almost surely, 2^{43625345405557} is an apocalyptic number.

It is an amenable number.

43625345405557 is a deficient number, since it is larger than the sum of its proper divisors (988961045027).

43625345405557 is a wasteful number, since it uses less digits than its factorization.

43625345405557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5288561879.

The product of its (nonzero) digits is 151200000, while the sum is 58.

The spelling of 43625345405557 in words is "forty-three trillion, six hundred twenty-five billion, three hundred forty-five million, four hundred five thousand, five hundred fifty-seven".