6425502659940 has 192 divisors, whose sum is σ = 22153345449984. Its totient is φ = 1355093632512.

The previous prime is 6425502659923. The next prime is 6425502659957. The reversal of 6425502659940 is 499562055246.

It is an interprime number because it is at equal distance from previous prime (6425502659923) and next prime (6425502659957).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11783607 + ... + 12316833.

It is an arithmetic number, because the mean of its divisors is an integer number (115382007552).

Almost surely, 2^{6425502659940} is an apocalyptic number.

6425502659940 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 6425502659940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11076672724992).

6425502659940 is an abundant number, since it is smaller than the sum of its proper divisors (15727842790044).

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

6425502659940 is a wasteful number, since it uses less digits than its factorization.

6425502659940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535466 (or 535464 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 57.

The spelling of 6425502659940 in words is "six trillion, four hundred twenty-five billion, five hundred two million, six hundred fifty-nine thousand, nine hundred forty".