253641635525 has 12 divisors (see below), whose sum is σ = 317455029792. Its totient is φ = 201016920240.

The previous prime is 253641635503. The next prime is 253641635549. The reversal of 253641635525 is 525536146352.

253641635525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 253641635525 - 2⁶ = 253641635461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253641635525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47406977 + ... + 47412326.

It is an arithmetic number, because the mean of its divisors is an integer number (26454585816).

Almost surely, 2^253641635525 is an apocalyptic number.

253641635525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

253641635525 is a deficient number, since it is larger than the sum of its proper divisors (63813394267).

253641635525 is a wasteful number, since it uses less digits than its factorization.

253641635525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94819420 (or 94819415 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 47.

The spelling of 253641635525 in words is "two hundred fifty-three billion, six hundred forty-one million, six hundred thirty-five thousand, five hundred twenty-five".