25425225 has 48 divisors (see below), whose sum is σ = 53389440. Its totient is φ = 11620800.

The previous prime is 25425223. The next prime is 25425269. The reversal of 25425225 is 52252452.

It is not a de Polignac number, because 25425225 - 2¹ = 25425223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25425223) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2035 + ... + 7415.

It is an arithmetic number, because the mean of its divisors is an integer number (1112280).

Almost surely, 2^25425225 is an apocalyptic number.

25425225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25425225 is an abundant number, since it is smaller than the sum of its proper divisors (27964215).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25425225 is a wasteful number, since it uses less digits than its factorization.

25425225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5407 (or 5396 counting only the distinct ones).

The product of its digits is 8000, while the sum is 27.

The square root of 25425225 is about 5042.3432052965. The cubic root of 25425225 is about 294.0502829448.

Adding to 25425225 its reverse (52252452), we get a palindrome (77677677).

The spelling of 25425225 in words is "twenty-five million, four hundred twenty-five thousand, two hundred twenty-five".