2505750804 has 18 divisors (see below), whose sum is σ = 6333981290. Its totient is φ = 835250256.

The previous prime is 2505750803. The next prime is 2505750811. The reversal of 2505750804 is 4080575052.

It is a happy number.

2505750804 is a `hidden beast` number, since 2 + 5 + 0 + 575 + 0 + 80 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1472256900 + 1033493904 = 38370^2 + 32148^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 69604189 = 2505750804 / (2 + 5 + 0 + 5 + 7 + 5 + 0 + 8 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505750803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34802059 + ... + 34802130.

Almost surely, 2^2505750804 is an apocalyptic number.

It is an amenable number.

2505750804 is an abundant number, since it is smaller than the sum of its proper divisors (3828230486).

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

2505750804 is a wasteful number, since it uses less digits than its factorization.

2505750804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69604199 (or 69604194 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 2505750804 is about 50057.4750062366. The cubic root of 2505750804 is about 1358.2486836012.

The spelling of 2505750804 in words is "two billion, five hundred five million, seven hundred fifty thousand, eight hundred four".