425442000521 has 8 divisors (see below), whose sum is σ = 435715173000. Its totient is φ = 415252012032.

The previous prime is 425442000517. The next prime is 425442000569. The reversal of 425442000521 is 125000244524.

It can be written as a sum of positive squares in 4 ways, for example, as 72444414025 + 352997586496 = 269155^2 + 594136^2 .

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 425442000521 - 2² = 425442000517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (425442000721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20785646 + ... + 20806103.

It is an arithmetic number, because the mean of its divisors is an integer number (54464396625).

Almost surely, 2^425442000521 is an apocalyptic number.

It is an amenable number.

425442000521 is a deficient number, since it is larger than the sum of its proper divisors (10273172479).

425442000521 is a wasteful number, since it uses less digits than its factorization.

425442000521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41591995.

The product of its (nonzero) digits is 12800, while the sum is 29.

The spelling of 425442000521 in words is "four hundred twenty-five billion, four hundred forty-two million, five hundred twenty-one", and thus it is an aban number.