625944816999420 has 24 divisors (see below), whose sum is σ = 1752645487598544. Its totient is φ = 166918617866496.

The previous prime is 625944816999409. The next prime is 625944816999421. The reversal of 625944816999420 is 24999618449526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625944816999421) 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, 5216206808269 + ... + 5216206808388.

It is an arithmetic number, because the mean of its divisors is an integer number (73026895316606).

Almost surely, 2^{625944816999420} is an apocalyptic number.

625944816999420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

625944816999420 is an abundant number, since it is smaller than the sum of its proper divisors (1126700670599124).

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

625944816999420 is a wasteful number, since it uses less digits than its factorization.

625944816999420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10432413616669 (or 10432413616667 counting only the distinct ones).

The product of its (nonzero) digits is 2418647040, while the sum is 78.

The spelling of 625944816999420 in words is "six hundred twenty-five trillion, nine hundred forty-four billion, eight hundred sixteen million, nine hundred ninety-nine thousand, four hundred twenty".