25475555 has 24 divisors (see below), whose sum is σ = 35893536. Its totient is φ = 17003520.

The previous prime is 25475539. The next prime is 25475579. The reversal of 25475555 is 55557452.

It is not a de Polignac number, because 25475555 - 2⁴ = 25475539 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58619 + ... + 59051.

It is an arithmetic number, because the mean of its divisors is an integer number (1495564).

Almost surely, 2^25475555 is an apocalyptic number.

25475555 is a deficient number, since it is larger than the sum of its proper divisors (10417981).

25475555 is an equidigital number, since it uses as much as digits as its factorization.

25475555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 486 counting only the distinct ones).

The product of its digits is 175000, while the sum is 38.

The square root of 25475555 is about 5047.3314731648. The cubic root of 25475555 is about 294.2441821935.

The spelling of 25475555 in words is "twenty-five million, four hundred seventy-five thousand, five hundred fifty-five".