1020205254255 has 32 divisors (see below), whose sum is σ = 1858144596480. Its totient is φ = 473138666880.

The previous prime is 1020205254199. The next prime is 1020205254287. The reversal of 1020205254255 is 5524525020201.

It is a happy number.

It is not a de Polignac number, because 1020205254255 - 2¹² = 1020205250159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 134410600 + ... + 134418189.

It is an arithmetic number, because the mean of its divisors is an integer number (58067018640).

Almost surely, 2^{1020205254255} is an apocalyptic number.

1020205254255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020205254255 is a deficient number, since it is larger than the sum of its proper divisors (837939342225).

1020205254255 is a wasteful number, since it uses less digits than its factorization.

1020205254255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268828831.

The product of its (nonzero) digits is 40000, while the sum is 33.

The spelling of 1020205254255 in words is "one trillion, twenty billion, two hundred five million, two hundred fifty-four thousand, two hundred fifty-five".