254900012640 has 384 divisors, whose sum is σ = 993434222592. Its totient is φ = 53497774080.

The previous prime is 254900012617. The next prime is 254900012657. The reversal of 254900012640 is 46210009452.

It is a congruent number.

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, 8327604 + ... + 8358156.

It is an arithmetic number, because the mean of its divisors is an integer number (2587068288).

Almost surely, 2^254900012640 is an apocalyptic number.

254900012640 is a gapful number since it is divisible by the number (20) 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 254900012640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496717111296).

254900012640 is an abundant number, since it is smaller than the sum of its proper divisors (738534209952).

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

254900012640 is a wasteful number, since it uses less digits than its factorization.

254900012640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30782 (or 30774 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 254900012640 in words is "two hundred fifty-four billion, nine hundred million, twelve thousand, six hundred forty".