2545503626 has 4 divisors (see below), whose sum is σ = 3818255442. Its totient is φ = 1272751812.

The previous prime is 2545503617. The next prime is 2545503641. The reversal of 2545503626 is 6263055452.

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., 2153424025 + 392079601 = 46405^2 + 19801^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2545503626.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636375905 + ... + 636375908.

Almost surely, 2^2545503626 is an apocalyptic number.

2545503626 is a deficient number, since it is larger than the sum of its proper divisors (1272751816).

2545503626 is a wasteful number, since it uses less digits than its factorization.

2545503626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272751815.

The product of its (nonzero) digits is 216000, while the sum is 38.

The square root of 2545503626 is about 50452.9843121296. The cubic root of 2545503626 is about 1365.3937377564.

The spelling of 2545503626 in words is "two billion, five hundred forty-five million, five hundred three thousand, six hundred twenty-six".