25394225 has 6 divisors (see below), whose sum is σ = 31488870. Its totient is φ = 20315360.

The previous prime is 25394221. The next prime is 25394233. The reversal of 25394225 is 52249352.

It can be written as a sum of positive squares in 3 ways, for example, as 2704 + 25391521 = 52^2 + 5039^2 .

It is not a de Polignac number, because 25394225 - 2² = 25394221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25394191 and 25394200.

It is not an unprimeable number, because it can be changed into a prime (25394221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 507860 + ... + 507909.

It is an arithmetic number, because the mean of its divisors is an integer number (5248145).

Almost surely, 2^25394225 is an apocalyptic number.

25394225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25394225 is a deficient number, since it is larger than the sum of its proper divisors (6094645).

25394225 is a wasteful number, since it uses less digits than its factorization.

25394225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015779 (or 1015774 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 25394225 is about 5039.2683000610. The cubic root of 25394225 is about 293.9307262705.

The spelling of 25394225 in words is "twenty-five million, three hundred ninety-four thousand, two hundred twenty-five".