25606425 has 24 divisors (see below), whose sum is σ = 45594304. Its totient is φ = 12605760.

The previous prime is 25606423. The next prime is 25606463. The reversal of 25606425 is 52460652.

It is not a de Polignac number, because 25606425 - 2¹ = 25606423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25606392 and 25606401.

It is not an unprimeable number, because it can be changed into a prime (25606423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12157 + ... + 14106.

Almost surely, 2^25606425 is an apocalyptic number.

25606425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25606425 is a deficient number, since it is larger than the sum of its proper divisors (19987879).

25606425 is a wasteful number, since it uses less digits than its factorization.

25606425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26289 (or 26284 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 25606425 is about 5060.2791424980. The cubic root of 25606425 is about 294.7471739771.

The spelling of 25606425 in words is "twenty-five million, six hundred six thousand, four hundred twenty-five".