425444965135624 has 512 divisors, whose sum is σ = 988661735424000. Its totient is φ = 167622821452800.

The previous prime is 425444965135601. The next prime is 425444965135627. The reversal of 425444965135624 is 426531569444524.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (425444965135627) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 969122927197 + ... + 969122927635.

It is an arithmetic number, because the mean of its divisors is an integer number (1930979952000).

Almost surely, 2^{425444965135624} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425444965135624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494330867712000).

425444965135624 is an abundant number, since it is smaller than the sum of its proper divisors (563216770288376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425444965135624 is a wasteful number, since it uses less digits than its factorization.

425444965135624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289 (or 1285 counting only the distinct ones).

The product of its digits is 497664000, while the sum is 64.

The spelling of 425444965135624 in words is "four hundred twenty-five trillion, four hundred forty-four billion, nine hundred sixty-five million, one hundred thirty-five thousand, six hundred twenty-four".