1254255545 has 4 divisors (see below), whose sum is σ = 1505106660. Its totient is φ = 1003404432.

The previous prime is 1254255523. The next prime is 1254255557. The reversal of 1254255545 is 5455524521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 716525824 + 537729721 = 26768^2 + 23189^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254255545 - 2¹⁸ = 1253993401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1254255499 and 1254255508.

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, 125425550 + ... + 125425559.

It is an arithmetic number, because the mean of its divisors is an integer number (376276665).

Almost surely, 2^1254255545 is an apocalyptic number.

It is an amenable number.

1254255545 is a deficient number, since it is larger than the sum of its proper divisors (250851115).

1254255545 is an equidigital number, since it uses as much as digits as its factorization.

1254255545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250851114.

The product of its digits is 200000, while the sum is 38.

The square root of 1254255545 is about 35415.4704190132. The cubic root of 1254255545 is about 1078.4383995649.

The spelling of 1254255545 in words is "one billion, two hundred fifty-four million, two hundred fifty-five thousand, five hundred forty-five".