203155505255252 has 72 divisors (see below), whose sum is σ = 394974396364968. Its totient is φ = 91353175879680.

The previous prime is 203155505255123. The next prime is 203155505255257. The reversal of 203155505255252 is 252552505551302.

203155505255252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3094735382596 + 200060769872656 = 1759186^2 + 14144284^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203155505255197 and 203155505255206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203155505255257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111442418 + ... + 113250710.

It is an arithmetic number, because the mean of its divisors is an integer number (5485755505069).

Almost surely, 2^{203155505255252} is an apocalyptic number.

203155505255252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

203155505255252 is a deficient number, since it is larger than the sum of its proper divisors (191818891109716).

203155505255252 is a wasteful number, since it uses less digits than its factorization.

203155505255252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810809 (or 1810796 counting only the distinct ones).

The product of its (nonzero) digits is 3750000, while the sum is 47.

The spelling of 203155505255252 in words is "two hundred three trillion, one hundred fifty-five billion, five hundred five million, two hundred fifty-five thousand, two hundred fifty-two".