2605749512 has 8 divisors (see below), whose sum is σ = 4885780350. Its totient is φ = 1302874752.

The previous prime is 2605749491. The next prime is 2605749529. The reversal of 2605749512 is 2159475062.

It can be written as a sum of positive squares in only one way, i.e., 2593457476 + 12292036 = 50926^2 + 3506^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2605749512.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162859337 + ... + 162859352.

Almost surely, 2^2605749512 is an apocalyptic number.

It is an amenable number.

2605749512 is a deficient number, since it is larger than the sum of its proper divisors (2280030838).

2605749512 is a wasteful number, since it uses less digits than its factorization.

2605749512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325718695 (or 325718691 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 2605749512 is about 51046.5426057436. The cubic root of 2605749512 is about 1376.0817073912.

The spelling of 2605749512 in words is "two billion, six hundred five million, seven hundred forty-nine thousand, five hundred twelve".