225620571077 has 4 divisors (see below), whose sum is σ = 246131532096. Its totient is φ = 205109610060.

The previous prime is 225620571073. The next prime is 225620571131. The reversal of 225620571077 is 770175026522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225620571077 - 2² = 225620571073 is a prime.

It is a super-2 number, since 2×225620571077² (a number of 24 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 (225620571073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10255480493 + ... + 10255480514.

It is an arithmetic number, because the mean of its divisors is an integer number (61532883024).

Almost surely, 2^225620571077 is an apocalyptic number.

It is an amenable number.

225620571077 is a deficient number, since it is larger than the sum of its proper divisors (20510961019).

225620571077 is a wasteful number, since it uses less digits than its factorization.

225620571077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20510961018.

The product of its (nonzero) digits is 411600, while the sum is 44.

Adding to 225620571077 its reverse (770175026522), we get a palindrome (995795597599).

Subtracting 225620571077 from its reverse (770175026522), we obtain a palindrome (544554455445).

It can be divided in two parts, 225620 and 571077, that added together give a palindrome (796697).

The spelling of 225620571077 in words is "two hundred twenty-five billion, six hundred twenty million, five hundred seventy-one thousand, seventy-seven".