25556545 has 8 divisors (see below), whose sum is σ = 35049024. Its totient is φ = 17524464.

The previous prime is 25556543. The next prime is 25556549. The reversal of 25556545 is 54565552.

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 25556545 - 2¹ = 25556543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25556543) 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, 365059 + ... + 365128.

It is an arithmetic number, because the mean of its divisors is an integer number (4381128).

Almost surely, 2^25556545 is an apocalyptic number.

It is an amenable number.

25556545 is a deficient number, since it is larger than the sum of its proper divisors (9492479).

25556545 is an equidigital number, since it uses as much as digits as its factorization.

25556545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730199.

The product of its digits is 150000, while the sum is 37.

The square root of 25556545 is about 5055.3481581391. The cubic root of 25556545 is about 294.5556654577. Note that the first 3 decimals are identical.

The spelling of 25556545 in words is "twenty-five million, five hundred fifty-six thousand, five hundred forty-five".