2691492244225 has 12 divisors (see below), whose sum is σ = 3338323950780. Its totient is φ = 2152630203200.

The previous prime is 2691492244219. The next prime is 2691492244267. The reversal of 2691492244225 is 5224422941962.

It can be written as a sum of positive squares in 6 ways, for example, as 271249305856 + 2420242938369 = 520816^2 + 1555713^2 .

It is not a de Polignac number, because 2691492244225 - 2⁵ = 2691492244193 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13992370 + ... + 14183419.

It is an arithmetic number, because the mean of its divisors is an integer number (278193662565).

Almost surely, 2^{2691492244225} is an apocalyptic number.

2691492244225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2691492244225 is a deficient number, since it is larger than the sum of its proper divisors (646831706555).

2691492244225 is a wasteful number, since it uses less digits than its factorization.

2691492244225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28179620 (or 28179615 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 52.

The spelling of 2691492244225 in words is "two trillion, six hundred ninety-one billion, four hundred ninety-two million, two hundred forty-four thousand, two hundred twenty-five".