2500121672 has 32 divisors (see below), whose sum is σ = 4827022200. Its totient is φ = 1213092864.

The previous prime is 2500121629. The next prime is 2500121717. The reversal of 2500121672 is 2761210052.

It can be written as a sum of positive squares in 4 ways, for example, as 2066066116 + 434055556 = 45454^2 + 20834^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 104288 + ... + 126000.

Almost surely, 2^2500121672 is an apocalyptic number.

It is an amenable number.

2500121672 is a deficient number, since it is larger than the sum of its proper divisors (2326900528).

2500121672 is a wasteful number, since it uses less digits than its factorization.

2500121672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22145 (or 22141 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2500121672 is about 50001.2167051963. The cubic root of 2500121672 is about 1357.2308258483.

The spelling of 2500121672 in words is "two billion, five hundred million, one hundred twenty-one thousand, six hundred seventy-two".