625980195840 has 352 divisors, whose sum is σ = 2028381143040. Its totient is φ = 164756422656.

The previous prime is 625980195791. The next prime is 625980195847. The reversal of 625980195840 is 48591089526.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (625980195847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 435009841 + ... + 435011279.

Almost surely, 2^625980195840 is an apocalyptic number.

625980195840 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 625980195840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1014190571520).

625980195840 is an abundant number, since it is smaller than the sum of its proper divisors (1402400947200).

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

625980195840 is a wasteful number, since it uses less digits than its factorization.

625980195840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817 (or 1799 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 57.

The spelling of 625980195840 in words is "six hundred twenty-five billion, nine hundred eighty million, one hundred ninety-five thousand, eight hundred forty".