25025125012640 has 48 divisors (see below), whose sum is σ = 59931746333928. Its totient is φ = 9872926027776.

The previous prime is 25025125012529. The next prime is 25025125012697. The reversal of 25025125012640 is 4621052152052.

It can be written as a sum of positive squares in 4 ways, for example, as 19846205288464 + 5178919724176 = 4454908^2 + 2275724^2 .

It is a super-3 number, since 3×25025125012640³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25025125012640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071269357 + ... + 1071292716.

Almost surely, 2^{25025125012640} is an apocalyptic number.

25025125012640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25025125012640 is an abundant number, since it is smaller than the sum of its proper divisors (34906621321288).

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

25025125012640 is a wasteful number, since it uses less digits than its factorization.

25025125012640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142562161 (or 2142562153 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 25025125012640 its reverse (4621052152052), we get a palindrome (29646177164692).

The spelling of 25025125012640 in words is "twenty-five trillion, twenty-five billion, one hundred twenty-five million, twelve thousand, six hundred forty".