225835535861 has 16 divisors (see below), whose sum is σ = 245300294400. Its totient is φ = 206677215360.

The previous prime is 225835535837. The next prime is 225835535881. The reversal of 225835535861 is 168535538522.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225835535861 is a prime.

It is a super-2 number, since 2×225835535861² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225835535881) 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, 571616 + ... + 882278.

It is an arithmetic number, because the mean of its divisors is an integer number (15331268400).

Almost surely, 2^225835535861 is an apocalyptic number.

It is an amenable number.

225835535861 is a deficient number, since it is larger than the sum of its proper divisors (19464758539).

225835535861 is a wasteful number, since it uses less digits than its factorization.

225835535861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311156.

The product of its digits is 8640000, while the sum is 53.

The spelling of 225835535861 in words is "two hundred twenty-five billion, eight hundred thirty-five million, five hundred thirty-five thousand, eight hundred sixty-one".