2106315025 has 6 divisors (see below), whose sum is σ = 2611830662. Its totient is φ = 1685052000.

The previous prime is 2106314981. The next prime is 2106315031. The reversal of 2106315025 is 5205136012.

It can be written as a sum of positive squares in 3 ways, for example, as 142850304 + 1963464721 = 11952^2 + 44311^2 .

It is not a de Polignac number, because 2106315025 - 2¹¹ = 2106312977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 84252601 = 2106315025 / (2 + 1 + 0 + 6 + 3 + 1 + 5 + 0 + 2 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42126276 + ... + 42126325.

Almost surely, 2^2106315025 is an apocalyptic number.

2106315025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2106315025 is a deficient number, since it is larger than the sum of its proper divisors (505515637).

2106315025 is an equidigital number, since it uses as much as digits as its factorization.

2106315025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84252611 (or 84252606 counting only the distinct ones).

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

The square root of 2106315025 is about 45894.6077987382. The cubic root of 2106315025 is about 1281.8615136829.

Multiplying 2106315025 by its sum of digits (25), we get a palindrome (52657875625).

The spelling of 2106315025 in words is "two billion, one hundred six million, three hundred fifteen thousand, twenty-five".