1145425555 has 4 divisors (see below), whose sum is σ = 1374510672. Its totient is φ = 916340440.

The previous prime is 1145425531. The next prime is 1145425601. The reversal of 1145425555 is 5555245411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5555245411 = 3389 ⋅1639199.

It is not a de Polignac number, because 1145425555 - 2¹¹ = 1145423507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114542551 + ... + 114542560.

It is an arithmetic number, because the mean of its divisors is an integer number (343627668).

Almost surely, 2^1145425555 is an apocalyptic number.

1145425555 is a deficient number, since it is larger than the sum of its proper divisors (229085117).

1145425555 is an equidigital number, since it uses as much as digits as its factorization.

1145425555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229085116.

The product of its digits is 100000, while the sum is 37.

The square root of 1145425555 is about 33844.1361981659. The cubic root of 1145425555 is about 1046.2985482588.

The spelling of 1145425555 in words is "one billion, one hundred forty-five million, four hundred twenty-five thousand, five hundred fifty-five".