2500072730 has 8 divisors (see below), whose sum is σ = 4500130932. Its totient is φ = 1000029088.

The previous prime is 2500072693. The next prime is 2500072733. The reversal of 2500072730 is 372700052.

It can be written as a sum of positive squares in 2 ways, for example, as 2001399169 + 498673561 = 44737^2 + 22331^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2500072730.

It is not an unprimeable number, because it can be changed into a prime (2500072733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125003627 + ... + 125003646.

Almost surely, 2^2500072730 is an apocalyptic number.

2500072730 is a deficient number, since it is larger than the sum of its proper divisors (2000058202).

2500072730 is a wasteful number, since it uses less digits than its factorization.

2500072730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250007280.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 2500072730 is about 50000.7272947104. The cubic root of 2500072730 is about 1357.2219694760.

Adding to 2500072730 its reverse (372700052), we get a palindrome (2872772782).

The spelling of 2500072730 in words is "two billion, five hundred million, seventy-two thousand, seven hundred thirty".