25425545 has 8 divisors (see below), whose sum is σ = 30594696. Its totient is φ = 20284416.

The previous prime is 25425539. The next prime is 25425551. The reversal of 25425545 is 54552452.

It is an interprime number because it is at equal distance from previous prime (25425539) and next prime (25425551).

It can be written as a sum of positive squares in 4 ways, for example, as 4804864 + 20620681 = 2192^2 + 4541^2 .

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 25425545 - 2⁴ = 25425529 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 4952 + ... + 8681.

It is an arithmetic number, because the mean of its divisors is an integer number (3824337).

Almost surely, 2^25425545 is an apocalyptic number.

It is an amenable number.

25425545 is a deficient number, since it is larger than the sum of its proper divisors (5169151).

25425545 is a wasteful number, since it uses less digits than its factorization.

25425545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14011.

The product of its digits is 40000, while the sum is 32.

The square root of 25425545 is about 5042.3749364759. The cubic root of 25425545 is about 294.0515165713.

Adding to 25425545 its reverse (54552452), we get a palindrome (79977997).

The spelling of 25425545 in words is "twenty-five million, four hundred twenty-five thousand, five hundred forty-five".