25465555 has 4 divisors (see below), whose sum is σ = 30558672. Its totient is φ = 20372440.

The previous prime is 25465553. The next prime is 25465579. The reversal of 25465555 is 55556452.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25465555 - 2¹ = 25465553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25465553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2546551 + ... + 2546560.

It is an arithmetic number, because the mean of its divisors is an integer number (7639668).

Almost surely, 2^25465555 is an apocalyptic number.

25465555 is a deficient number, since it is larger than the sum of its proper divisors (5093117).

25465555 is an equidigital number, since it uses as much as digits as its factorization.

25465555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5093116.

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

The square root of 25465555 is about 5046.3407534569. The cubic root of 25465555 is about 294.2056769558.

The spelling of 25465555 in words is "twenty-five million, four hundred sixty-five thousand, five hundred fifty-five".