2665025356420 has 36 divisors (see below), whose sum is σ = 6510276230220. Its totient is φ = 913722979008.

The previous prime is 2665025356403. The next prime is 2665025356421. The reversal of 2665025356420 is 246535205662.

It can be written as a sum of positive squares in 2 ways, for example, as 1696954339584 + 968071016836 = 1302672^2 + 983906^2 .

It is not an unprimeable number, because it can be changed into a prime (2665025356421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1359705835 + ... + 1359707794.

It is an arithmetic number, because the mean of its divisors is an integer number (180841006395).

Almost surely, 2^{2665025356420} is an apocalyptic number.

2665025356420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2665025356420 is an abundant number, since it is smaller than the sum of its proper divisors (3845250873800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2665025356420 is a wasteful number, since it uses less digits than its factorization.

2665025356420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719413652 (or 2719413643 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 2665025356420 in words is "two trillion, six hundred sixty-five billion, twenty-five million, three hundred fifty-six thousand, four hundred twenty".