2505061911 has 48 divisors (see below), whose sum is σ = 3982505184. Its totient is φ = 1393920000.

The previous prime is 2505061903. The next prime is 2505061931. The reversal of 2505061911 is 1191605052.

It is not a de Polignac number, because 2505061911 - 2³ = 2505061903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505061931) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 248061 + ... + 257961.

It is an arithmetic number, because the mean of its divisors is an integer number (82968858).

Almost surely, 2^2505061911 is an apocalyptic number.

2505061911 is a deficient number, since it is larger than the sum of its proper divisors (1477443273).

2505061911 is a wasteful number, since it uses less digits than its factorization.

2505061911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9984 (or 9973 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 30.

The square root of 2505061911 is about 50050.5935129645. The cubic root of 2505061911 is about 1358.1242001170.

Adding to 2505061911 its reverse (1191605052), we get a palindrome (3696666963).

The spelling of 2505061911 in words is "two billion, five hundred five million, sixty-one thousand, nine hundred eleven".