1255064521 has 8 divisors (see below), whose sum is σ = 1284932000. Its totient is φ = 1225228032.

The previous prime is 1255064509. The next prime is 1255064527. The reversal of 1255064521 is 1254605521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1255064521 - 2¹³ = 1255056329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255064527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88105 + ... + 101353.

It is an arithmetic number, because the mean of its divisors is an integer number (160616500).

Almost surely, 2^1255064521 is an apocalyptic number.

It is an amenable number.

1255064521 is a deficient number, since it is larger than the sum of its proper divisors (29867479).

1255064521 is a wasteful number, since it uses less digits than its factorization.

1255064521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15495.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 1255064521 is about 35426.8898013924. The cubic root of 1255064521 is about 1078.6702085943.

The spelling of 1255064521 in words is "one billion, two hundred fifty-five million, sixty-four thousand, five hundred twenty-one".