1255500653 has 4 divisors (see below), whose sum is σ = 1369637088. Its totient is φ = 1141364220.

The previous prime is 1255500641. The next prime is 1255500667. The reversal of 1255500653 is 3560055521.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3560055521 = 11 ⋅323641411.

It is a cyclic number.

It is not a de Polignac number, because 1255500653 - 2¹⁰ = 1255499629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255500053) 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, 57068201 + ... + 57068222.

It is an arithmetic number, because the mean of its divisors is an integer number (342409272).

Almost surely, 2^1255500653 is an apocalyptic number.

It is an amenable number.

1255500653 is a deficient number, since it is larger than the sum of its proper divisors (114136435).

1255500653 is a wasteful number, since it uses less digits than its factorization.

1255500653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114136434.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 1255500653 is about 35433.0446476167. The cubic root of 1255500653 is about 1078.7951392534.

The spelling of 1255500653 in words is "one billion, two hundred fifty-five million, five hundred thousand, six hundred fifty-three".