2206155725557 has 16 divisors (see below), whose sum is σ = 2557576846720. Its totient is φ = 1863833421312.

The previous prime is 2206155725509. The next prime is 2206155725593. The reversal of 2206155725557 is 7555275516022.

It is a cyclic number.

It is not a de Polignac number, because 2206155725557 - 2¹¹ = 2206155723509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206155725057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688863 + ... + 2210620.

It is an arithmetic number, because the mean of its divisors is an integer number (159848552920).

Almost surely, 2^{2206155725557} is an apocalyptic number.

It is an amenable number.

2206155725557 is a deficient number, since it is larger than the sum of its proper divisors (351421121163).

2206155725557 is a wasteful number, since it uses less digits than its factorization.

2206155725557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2901052.

The product of its (nonzero) digits is 7350000, while the sum is 52.

The spelling of 2206155725557 in words is "two trillion, two hundred six billion, one hundred fifty-five million, seven hundred twenty-five thousand, five hundred fifty-seven".