1205020255 has 32 divisors (see below), whose sum is σ = 1559585664. Its totient is φ = 891449856.

The previous prime is 1205020253. The next prime is 1205020277. The reversal of 1205020255 is 5520205021.

It is a cyclic number.

It is not a de Polignac number, because 1205020255 - 2¹ = 1205020253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205020253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735297 + ... + 736933.

It is an arithmetic number, because the mean of its divisors is an integer number (48737052).

Almost surely, 2^1205020255 is an apocalyptic number.

1205020255 is a deficient number, since it is larger than the sum of its proper divisors (354565409).

1205020255 is a wasteful number, since it uses less digits than its factorization.

1205020255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1205020255 is about 34713.4016627584. The cubic root of 1205020255 is about 1064.1384010588.

Adding to 1205020255 its reverse (5520205021), we get a palindrome (6725225276).

The spelling of 1205020255 in words is "one billion, two hundred five million, twenty thousand, two hundred fifty-five".