1255433623 has 4 divisors (see below), whose sum is σ = 1256190208. Its totient is φ = 1254677040.

The previous prime is 1255433617. The next prime is 1255433657. The reversal of 1255433623 is 3263345521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3263345521 = 53 ⋅61572557.

It is a cyclic number.

It is not a de Polignac number, because 1255433623 - 2¹⁷ = 1255302551 is a prime.

It is a super-2 number, since 2×1255433623² = 3152227163517812258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255463623) 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, 375798 + ... + 379123.

It is an arithmetic number, because the mean of its divisors is an integer number (314047552).

Almost surely, 2^1255433623 is an apocalyptic number.

1255433623 is a deficient number, since it is larger than the sum of its proper divisors (756585).

1255433623 is an equidigital number, since it uses as much as digits as its factorization.

1255433623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756584.

The product of its digits is 64800, while the sum is 34.

The square root of 1255433623 is about 35432.0987665140. The cubic root of 1255433623 is about 1078.7759402921.

The spelling of 1255433623 in words is "one billion, two hundred fifty-five million, four hundred thirty-three thousand, six hundred twenty-three".