25478625 has 16 divisors (see below), whose sum is σ = 42397056. Its totient is φ = 13588400.

The previous prime is 25478623. The next prime is 25478627. The reversal of 25478625 is 52687452.

It is an interprime number because it is at equal distance from previous prime (25478623) and next prime (25478627).

It is not a de Polignac number, because 25478625 - 2¹ = 25478623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25478623) 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 15 ways as a sum of consecutive naturals, for example, 33597 + ... + 34346.

It is an arithmetic number, because the mean of its divisors is an integer number (2649816).

Almost surely, 2^25478625 is an apocalyptic number.

25478625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25478625 is a deficient number, since it is larger than the sum of its proper divisors (16918431).

25478625 is an equidigital number, since it uses as much as digits as its factorization.

25478625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67961 (or 67951 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 25478625 is about 5047.6355851032. The cubic root of 25478625 is about 294.2560012799.

The spelling of 25478625 in words is "twenty-five million, four hundred seventy-eight thousand, six hundred twenty-five".