2549745900 has 216 divisors, whose sum is σ = 8644446720. Its totient is φ = 624890880.

The previous prime is 2549745881. The next prime is 2549745941. The reversal of 2549745900 is 95479452.

2549745900 is a `hidden beast` number, since 2 + 54 + 9 + 7 + 4 + 590 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a nialpdrome in base 15.

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 in 71 ways as a sum of consecutive naturals, for example, 4480816 + ... + 4481384.

Almost surely, 2^2549745900 is an apocalyptic number.

2549745900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2549745900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4322223360).

2549745900 is an abundant number, since it is smaller than the sum of its proper divisors (6094700820).

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

2549745900 is a wasteful number, since it uses less digits than its factorization.

2549745900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 2549745900 is about 50495.0086642234. The cubic root of 2549745900 is about 1366.1518273620.

The spelling of 2549745900 in words is "two billion, five hundred forty-nine million, seven hundred forty-five thousand, nine hundred".