2500545545 has 16 divisors (see below), whose sum is σ = 3027468288. Its totient is φ = 1982594880.

The previous prime is 2500545511. The next prime is 2500545557. The reversal of 2500545545 is 5455450052.

It is a de Polignac number, because none of the positive numbers 2^k-2500545545 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 932747 + ... + 935423.

It is an arithmetic number, because the mean of its divisors is an integer number (189216768).

Almost surely, 2^2500545545 is an apocalyptic number.

It is an amenable number.

2500545545 is a deficient number, since it is larger than the sum of its proper divisors (526922743).

2500545545 is a wasteful number, since it uses less digits than its factorization.

2500545545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4280.

The product of its (nonzero) digits is 100000, while the sum is 35.

The square root of 2500545545 is about 50005.4551524131. The cubic root of 2500545545 is about 1357.3075235812.

Adding to 2500545545 its reverse (5455450052), we get a palindrome (7955995597).

The spelling of 2500545545 in words is "two billion, five hundred million, five hundred forty-five thousand, five hundred forty-five".