625555545600 has 240 divisors, whose sum is σ = 2156333807232. Its totient is φ = 159561768960.

The previous prime is 625555545599. The next prime is 625555545661. The reversal of 625555545600 is 6545555526.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 625555545600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 529059 + ... + 1237341.

Almost surely, 2^625555545600 is an apocalyptic number.

625555545600 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625555545600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1078166903616).

625555545600 is an abundant number, since it is smaller than the sum of its proper divisors (1530778261632).

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

625555545600 is a wasteful number, since it uses less digits than its factorization.

625555545600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708337 (or 708316 counting only the distinct ones).

The product of its (nonzero) digits is 4500000, while the sum is 48.

The spelling of 625555545600 in words is "six hundred twenty-five billion, five hundred fifty-five million, five hundred forty-five thousand, six hundred".