255220211461 has 4 divisors (see below), whose sum is σ = 262118055052. Its totient is φ = 248322367872.

The previous prime is 255220211443. The next prime is 255220211501. The reversal of 255220211461 is 164112022552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 247859601025 + 7360610436 = 497855^2 + 85794^2 .

It is a cyclic number.

It is not a de Polignac number, because 255220211461 - 2³³ = 246630276869 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 (255220211401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3448921740 + ... + 3448921813.

It is an arithmetic number, because the mean of its divisors is an integer number (65529513763).

Almost surely, 2^255220211461 is an apocalyptic number.

It is an amenable number.

255220211461 is a deficient number, since it is larger than the sum of its proper divisors (6897843591).

255220211461 is an equidigital number, since it uses as much as digits as its factorization.

255220211461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6897843590.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 255220211461 in words is "two hundred fifty-five billion, two hundred twenty million, two hundred eleven thousand, four hundred sixty-one".