2625650043661 has 16 divisors (see below), whose sum is σ = 2636722601728. Its totient is φ = 2614605739200.

The previous prime is 2625650043613. The next prime is 2625650043743. The reversal of 2625650043661 is 1663400565262.

It is a cyclic number.

It is not a de Polignac number, because 2625650043661 - 2²³ = 2625641655053 is a prime.

It is a super-2 number, since 2×2625650043661² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2625650043361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704492380 + ... + 704496106.

It is an arithmetic number, because the mean of its divisors is an integer number (164795162608).

Almost surely, 2^{2625650043661} is an apocalyptic number.

It is an amenable number.

2625650043661 is a deficient number, since it is larger than the sum of its proper divisors (11072558067).

2625650043661 is a wasteful number, since it uses less digits than its factorization.

2625650043661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6772.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 2625650043661 in words is "two trillion, six hundred twenty-five billion, six hundred fifty million, forty-three thousand, six hundred sixty-one".