2545417720 has 16 divisors (see below), whose sum is σ = 5727189960. Its totient is φ = 1018167072.

The previous prime is 2545417717. The next prime is 2545417729. The reversal of 2545417720 is 277145452.

It is a self number, because there is not a number n which added to its sum of digits gives 2545417720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545417729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31817682 + ... + 31817761.

Almost surely, 2^2545417720 is an apocalyptic number.

2545417720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2545417720 is an abundant number, since it is smaller than the sum of its proper divisors (3181772240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2545417720 is a wasteful number, since it uses less digits than its factorization.

2545417720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63635454 (or 63635450 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 37.

The square root of 2545417720 is about 50452.1329578840. The cubic root of 2545417720 is about 1365.3783777529.

The spelling of 2545417720 in words is "two billion, five hundred forty-five million, four hundred seventeen thousand, seven hundred twenty".