2505511545 has 32 divisors (see below), whose sum is σ = 4105707264. Its totient is φ = 1304352000.

The previous prime is 2505511537. The next prime is 2505511549. The reversal of 2505511545 is 5451155052.

2505511545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2505511545 - 2³ = 2505511537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2505511549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95919 + ... + 119211.

It is an arithmetic number, because the mean of its divisors is an integer number (128303352).

Almost surely, 2^2505511545 is an apocalyptic number.

It is an amenable number.

2505511545 is a deficient number, since it is larger than the sum of its proper divisors (1600195719).

2505511545 is a wasteful number, since it uses less digits than its factorization.

2505511545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23473.

The product of its (nonzero) digits is 25000, while the sum is 33.

The square root of 2505511545 is about 50055.0851063106. The cubic root of 2505511545 is about 1358.2054519059.

Adding to 2505511545 its reverse (5451155052), we get a palindrome (7956666597).

The spelling of 2505511545 in words is "two billion, five hundred five million, five hundred eleven thousand, five hundred forty-five".