2106650025 has 60 divisors (see below), whose sum is σ = 3946427100. Its totient is φ = 1110827520.

The previous prime is 2106649999. The next prime is 2106650053. The reversal of 2106650025 is 5200566012.

2106650025 is a `hidden beast` number, since 2 + 1 + 0 + 6 + 650 + 0 + 2 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 3143529 + 2103506496 = 1773^2 + 45864^2 .

It is not a de Polignac number, because 2106650025 - 2¹³ = 2106641833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 174381 + ... + 186069.

It is an arithmetic number, because the mean of its divisors is an integer number (65773785).

Almost surely, 2^2106650025 is an apocalyptic number.

2106650025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2106650025 is a deficient number, since it is larger than the sum of its proper divisors (1839777075).

2106650025 is a wasteful number, since it uses less digits than its factorization.

2106650025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11800 (or 11786 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2106650025 is about 45898.2573198591. The cubic root of 2106650025 is about 1281.9294681971.

The spelling of 2106650025 in words is "two billion, one hundred six million, six hundred fifty thousand, twenty-five".