255274521477 has 4 divisors (see below), whose sum is σ = 340366028640. Its totient is φ = 170183014316.

The previous prime is 255274521461. The next prime is 255274521487. The reversal of 255274521477 is 774125472552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255274521477 - 2⁴ = 255274521461 is a prime.

It is a super-2 number, since 2×255274521477² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255274521407) 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, 42545753577 + ... + 42545753582.

It is an arithmetic number, because the mean of its divisors is an integer number (85091507160).

Almost surely, 2^255274521477 is an apocalyptic number.

It is an amenable number.

255274521477 is a deficient number, since it is larger than the sum of its proper divisors (85091507163).

255274521477 is an equidigital number, since it uses as much as digits as its factorization.

255274521477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85091507162.

The product of its digits is 5488000, while the sum is 51.

The spelling of 255274521477 in words is "two hundred fifty-five billion, two hundred seventy-four million, five hundred twenty-one thousand, four hundred seventy-seven".