25203425 has 12 divisors (see below), whose sum is σ = 33656700. Its totient is φ = 18611520.

The previous prime is 25203419. The next prime is 25203463. The reversal of 25203425 is 52430252.

It can be written as a sum of positive squares in 6 ways, for example, as 6739216 + 18464209 = 2596^2 + 4297^2 .

It is not a de Polignac number, because 25203425 - 2⁶ = 25203361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25203425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38450 + ... + 39099.

It is an arithmetic number, because the mean of its divisors is an integer number (2804725).

Almost surely, 2^25203425 is an apocalyptic number.

25203425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25203425 is a deficient number, since it is larger than the sum of its proper divisors (8453275).

25203425 is a wasteful number, since it uses less digits than its factorization.

25203425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77572 (or 77567 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 25203425 is about 5020.3012857796. The cubic root of 25203425 is about 293.1927234436.

Adding to 25203425 its reverse (52430252), we get a palindrome (77633677).

The spelling of 25203425 in words is "twenty-five million, two hundred three thousand, four hundred twenty-five".