56440425 has 24 divisors (see below), whose sum is σ = 98806176. Its totient is φ = 28330240.

The previous prime is 56440421. The next prime is 56440427. The reversal of 56440425 is 52404465.

It is not a de Polignac number, because 56440425 - 2² = 56440421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56440392 and 56440401.

It is not an unprimeable number, because it can be changed into a prime (56440421) 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, 20859 + ... + 23408.

It is an arithmetic number, because the mean of its divisors is an integer number (4116924).

Almost surely, 2^56440425 is an apocalyptic number.

It is an amenable number.

56440425 is a deficient number, since it is larger than the sum of its proper divisors (42365751).

56440425 is a wasteful number, since it uses less digits than its factorization.

56440425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44297 (or 44292 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 56440425 is about 7512.6842739463. The cubic root of 56440425 is about 383.5865980190.

It can be divided in two parts, 56440 and 425, that added together give a palindrome (56865).

The spelling of 56440425 in words is "fifty-six million, four hundred forty thousand, four hundred twenty-five".