2505364973 has 4 divisors (see below), whose sum is σ = 2505507228. Its totient is φ = 2505222720.

The previous prime is 2505364957. The next prime is 2505364991. The reversal of 2505364973 is 3794635052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2117196169 + 388168804 = 46013^2 + 19702^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505364973 - 2⁴ = 2505364957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505364933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40238 + ... + 81423.

It is an arithmetic number, because the mean of its divisors is an integer number (626376807).

Almost surely, 2^2505364973 is an apocalyptic number.

It is an amenable number.

2505364973 is a deficient number, since it is larger than the sum of its proper divisors (142255).

2505364973 is a wasteful number, since it uses less digits than its factorization.

2505364973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142254.

The product of its (nonzero) digits is 680400, while the sum is 44.

The square root of 2505364973 is about 50053.6209779073. The cubic root of 2505364973 is about 1358.1789664600.

The spelling of 2505364973 in words is "two billion, five hundred five million, three hundred sixty-four thousand, nine hundred seventy-three".