55225591569 has 24 divisors (see below), whose sum is σ = 82743620960. Its totient is φ = 35468217792.

The previous prime is 55225591567. The next prime is 55225591573. The reversal of 55225591569 is 96519552255.

55225591569 is a `hidden beast` number, since 5 + 5 + 2 + 25 + 59 + 1 + 569 = 666.

It is not a de Polignac number, because 55225591569 - 2¹ = 55225591567 is a prime.

It is a super-2 number, since 2×55225591569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55225591567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 949159 + ... + 1005660.

Almost surely, 2^55225591569 is an apocalyptic number.

It is an amenable number.

55225591569 is a deficient number, since it is larger than the sum of its proper divisors (27518029391).

55225591569 is a wasteful number, since it uses less digits than its factorization.

55225591569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954941 (or 1954938 counting only the distinct ones).

The product of its digits is 6075000, while the sum is 54.

The spelling of 55225591569 in words is "fifty-five billion, two hundred twenty-five million, five hundred ninety-one thousand, five hundred sixty-nine".