2545641226 has 4 divisors (see below), whose sum is σ = 3818461842. Its totient is φ = 1272820612.

The previous prime is 2545641209. The next prime is 2545641227. The reversal of 2545641226 is 6221465452.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 2363418225 + 182223001 = 48615^2 + 13499^2 .

It is not an unprimeable number, because it can be changed into a prime (2545641227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636410305 + ... + 636410308.

Almost surely, 2^2545641226 is an apocalyptic number.

2545641226 is a deficient number, since it is larger than the sum of its proper divisors (1272820616).

2545641226 is a wasteful number, since it uses less digits than its factorization.

2545641226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272820615.

The product of its digits is 115200, while the sum is 37.

The square root of 2545641226 is about 50454.3479394987. The cubic root of 2545641226 is about 1365.4183399335.

The spelling of 2545641226 in words is "two billion, five hundred forty-five million, six hundred forty-one thousand, two hundred twenty-six".