2605129797 has 16 divisors (see below), whose sum is σ = 3502743552. Its totient is φ = 1722155760.

The previous prime is 2605129789. The next prime is 2605129841. The reversal of 2605129797 is 7979215062.

It is not a de Polignac number, because 2605129797 - 2³ = 2605129789 is a prime.

It is a super-2 number, since 2×2605129797² = 13573402518434522418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605129727) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 968188 + ... + 970874.

It is an arithmetic number, because the mean of its divisors is an integer number (218921472).

Almost surely, 2^2605129797 is an apocalyptic number.

It is an amenable number.

2605129797 is a deficient number, since it is larger than the sum of its proper divisors (897613755).

2605129797 is a wasteful number, since it uses less digits than its factorization.

2605129797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5288.

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 2605129797 is about 51040.4721471109. The cubic root of 2605129797 is about 1375.9726094030.

The spelling of 2605129797 in words is "two billion, six hundred five million, one hundred twenty-nine thousand, seven hundred ninety-seven".