25404325 has 6 divisors (see below), whose sum is σ = 31501394. Its totient is φ = 20323440.

The previous prime is 25404317. The next prime is 25404343. The reversal of 25404325 is 52340452.

It can be written as a sum of positive squares in 3 ways, for example, as 2879809 + 22524516 = 1697^2 + 4746^2 .

It is not a de Polignac number, because 25404325 - 2³ = 25404317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1016173 = 25404325 / (2 + 5 + 4 + 0 + 4 + 3 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25404325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 508062 + ... + 508111.

Almost surely, 2^25404325 is an apocalyptic number.

25404325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25404325 is a deficient number, since it is larger than the sum of its proper divisors (6097069).

25404325 is a wasteful number, since it uses less digits than its factorization.

25404325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016183 (or 1016178 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 25404325 is about 5040.2703300518. The cubic root of 25404325 is about 293.9696892873.

Adding to 25404325 its reverse (52340452), we get a palindrome (77744777).

The spelling of 25404325 in words is "twenty-five million, four hundred four thousand, three hundred twenty-five".