25396425 has 36 divisors (see below), whose sum is σ = 46614204. Its totient is φ = 13209600.

The previous prime is 25396421. The next prime is 25396429. The reversal of 25396425 is 52469352.

25396425 is a `hidden beast` number, since 2 + 5 + 3 + 9 + 642 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (25396421) and next prime (25396429).

It can be written as a sum of positive squares in 6 ways, for example, as 685584 + 24710841 = 828^2 + 4971^2 .

It is not a de Polignac number, because 25396425 - 2² = 25396421 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25396425.

It is not an unprimeable number, because it can be changed into a prime (25396421) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7849 + ... + 10601.

It is an arithmetic number, because the mean of its divisors is an integer number (1294839).

Almost surely, 2^25396425 is an apocalyptic number.

25396425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25396425 is a deficient number, since it is larger than the sum of its proper divisors (21217779).

25396425 is a wasteful number, since it uses less digits than its factorization.

25396425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810 (or 2802 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 25396425 is about 5039.4865809922. The cubic root of 25396425 is about 293.9392141442.

The spelling of 25396425 in words is "twenty-five million, three hundred ninety-six thousand, four hundred twenty-five".