1255356564 has 48 divisors (see below), whose sum is σ = 3651949056. Its totient is φ = 326066400.

The previous prime is 1255356559. The next prime is 1255356589. The reversal of 1255356564 is 4656535521.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 678382 + ... + 680229.

It is an arithmetic number, because the mean of its divisors is an integer number (76082272).

Almost surely, 2^1255356564 is an apocalyptic number.

1255356564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1255356564 is an abundant number, since it is smaller than the sum of its proper divisors (2396592492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255356564 is a wasteful number, since it uses less digits than its factorization.

1255356564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358636 (or 1358634 counting only the distinct ones).

The product of its digits is 540000, while the sum is 42.

The square root of 1255356564 is about 35431.0113318827. The cubic root of 1255356564 is about 1078.7538679461.

The spelling of 1255356564 in words is "one billion, two hundred fifty-five million, three hundred fifty-six thousand, five hundred sixty-four".