2656666361325 has 96 divisors (see below), whose sum is σ = 4472857718784. Its totient is φ = 1391101600000.

The previous prime is 2656666361303. The next prime is 2656666361329. The reversal of 2656666361325 is 5231636666562.

It is a happy number.

It is not a de Polignac number, because 2656666361325 - 2⁹ = 2656666360813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656666361329) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2435074030 + ... + 2435075120.

It is an arithmetic number, because the mean of its divisors is an integer number (46592267904).

Almost surely, 2^{2656666361325} is an apocalyptic number.

2656666361325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2656666361325 is a deficient number, since it is larger than the sum of its proper divisors (1816191357459).

2656666361325 is a wasteful number, since it uses less digits than its factorization.

2656666361325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667 (or 2662 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 57.

The spelling of 2656666361325 in words is "two trillion, six hundred fifty-six billion, six hundred sixty-six million, three hundred sixty-one thousand, three hundred twenty-five".