25425775 has 6 divisors (see below), whose sum is σ = 31527992. Its totient is φ = 20340600.

The previous prime is 25425773. The next prime is 25425811. The reversal of 25425775 is 57752452.

It is not a de Polignac number, because 25425775 - 2¹ = 25425773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25425773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 508491 + ... + 508540.

Almost surely, 2^25425775 is an apocalyptic number.

25425775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25425775 is a deficient number, since it is larger than the sum of its proper divisors (6102217).

25425775 is a wasteful number, since it uses less digits than its factorization.

25425775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017041 (or 1017036 counting only the distinct ones).

The product of its digits is 98000, while the sum is 37.

The square root of 25425775 is about 5042.3977431377. The cubic root of 25425775 is about 294.0524032340.

The spelling of 25425775 in words is "twenty-five million, four hundred twenty-five thousand, seven hundred seventy-five".