225651440137 has 8 divisors (see below), whose sum is σ = 230460141312. Its totient is φ = 220843056000.

The previous prime is 225651440123. The next prime is 225651440177. The reversal of 225651440137 is 731044156522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225651440137 - 2⁷ = 225651440009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225651440137.

It is not an unprimeable number, because it can be changed into a prime (225651440107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1858812 + ... + 1976482.

It is an arithmetic number, because the mean of its divisors is an integer number (28807517664).

Almost surely, 2^225651440137 is an apocalyptic number.

It is an amenable number.

225651440137 is a deficient number, since it is larger than the sum of its proper divisors (4808701175).

225651440137 is a wasteful number, since it uses less digits than its factorization.

225651440137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158519.

The product of its (nonzero) digits is 201600, while the sum is 40.

Adding to 225651440137 its reverse (731044156522), we get a palindrome (956695596659).

The spelling of 225651440137 in words is "two hundred twenty-five billion, six hundred fifty-one million, four hundred forty thousand, one hundred thirty-seven".