2691262225 has 6 divisors (see below), whose sum is σ = 3337165190. Its totient is φ = 2153009760.

The previous prime is 2691262169. The next prime is 2691262289. The reversal of 2691262225 is 5222621962.

It can be written as a sum of positive squares in 3 ways, for example, as 704955601 + 1986306624 = 26551^2 + 44568^2 .

It is not a de Polignac number, because 2691262225 - 2³¹ = 543778577 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53825220 + ... + 53825269.

Almost surely, 2^2691262225 is an apocalyptic number.

2691262225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2691262225 is a deficient number, since it is larger than the sum of its proper divisors (645902965).

2691262225 is a wasteful number, since it uses less digits than its factorization.

2691262225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107650499 (or 107650494 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 2691262225 is about 51877.3768130194. The cubic root of 2691262225 is about 1390.9729097789.

The spelling of 2691262225 in words is "two billion, six hundred ninety-one million, two hundred sixty-two thousand, two hundred twenty-five".