2605001650 has 72 divisors (see below), whose sum is σ = 5244508080. Its totient is φ = 959999040.

The previous prime is 2605001629. The next prime is 2605001653. The reversal of 2605001650 is 561005062.

2605001650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (2605001653) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1299549 + ... + 1301551.

It is an arithmetic number, because the mean of its divisors is an integer number (72840390).

Almost surely, 2^2605001650 is an apocalyptic number.

2605001650 is an abundant number, since it is smaller than the sum of its proper divisors (2639506430).

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

2605001650 is a wasteful number, since it uses less digits than its factorization.

2605001650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108 (or 2066 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2605001650 is about 51039.2167847431. The cubic root of 2605001650 is about 1375.9500475517.

The spelling of 2605001650 in words is "two billion, six hundred five million, one thousand, six hundred fifty".