1255021552 has 10 divisors (see below), whose sum is σ = 2431604288. Its totient is φ = 627510768.

The previous prime is 1255021451. The next prime is 1255021561. The reversal of 1255021552 is 2551205521.

It is a self number, because there is not a number n which added to its sum of digits gives 1255021552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39219408 + ... + 39219439.

Almost surely, 2^1255021552 is an apocalyptic number.

It is an amenable number.

1255021552 is a deficient number, since it is larger than the sum of its proper divisors (1176582736).

1255021552 is an equidigital number, since it uses as much as digits as its factorization.

1255021552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78438855 (or 78438849 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 1255021552 is about 35426.2833500778. The cubic root of 1255021552 is about 1078.6578984943.

The spelling of 1255021552 in words is "one billion, two hundred fifty-five million, twenty-one thousand, five hundred fifty-two".