1255520153 has 8 divisors (see below), whose sum is σ = 1264805376. Its totient is φ = 1246248000.

The previous prime is 1255520137. The next prime is 1255520207. The reversal of 1255520153 is 3510255521.

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 1255520153 - 2⁴ = 1255520137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255520053) 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, 272993 + ... + 277553.

It is an arithmetic number, because the mean of its divisors is an integer number (158100672).

Almost surely, 2^1255520153 is an apocalyptic number.

It is an amenable number.

1255520153 is a deficient number, since it is larger than the sum of its proper divisors (9285223).

1255520153 is a wasteful number, since it uses less digits than its factorization.

1255520153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6535.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1255520153 is about 35433.3198134186. The cubic root of 1255520153 is about 1078.8007243816.

Adding to 1255520153 its reverse (3510255521), we get a palindrome (4765775674).

The spelling of 1255520153 in words is "one billion, two hundred fifty-five million, five hundred twenty thousand, one hundred fifty-three".