2545121223 has 8 divisors (see below), whose sum is σ = 3770550000. Its totient is φ = 1696747464.

The previous prime is 2545121219. The next prime is 2545121263. The reversal of 2545121223 is 3221215452.

2545121223 is a `hidden beast` number, since 25 + 4 + 512 + 122 + 3 = 666.

It is not a de Polignac number, because 2545121223 - 2² = 2545121219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 94263749 = 2545121223 / (2 + 5 + 4 + 5 + 1 + 2 + 1 + 2 + 2 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545121263) 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, 47131848 + ... + 47131901.

It is an arithmetic number, because the mean of its divisors is an integer number (471318750).

Almost surely, 2^2545121223 is an apocalyptic number.

2545121223 is a deficient number, since it is larger than the sum of its proper divisors (1225428777).

2545121223 is an equidigital number, since it uses as much as digits as its factorization.

2545121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94263758 (or 94263752 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 2545121223 is about 50449.1944732520. The cubic root of 2545121223 is about 1365.3253613973.

Adding to 2545121223 its reverse (3221215452), we get a palindrome (5766336675).

The spelling of 2545121223 in words is "two billion, five hundred forty-five million, one hundred twenty-one thousand, two hundred twenty-three".