25042625 has 8 divisors (see below), whose sum is σ = 31253352. Its totient is φ = 20034000.

The previous prime is 25042621. The next prime is 25042639. The reversal of 25042625 is 52624052.

It can be written as a sum of positive squares in 4 ways, for example, as 5612161 + 19430464 = 2369^2 + 4408^2 .

It is not a de Polignac number, because 25042625 - 2² = 25042621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25042594 and 25042603.

It is not an unprimeable number, because it can be changed into a prime (25042621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100046 + ... + 100295.

It is an arithmetic number, because the mean of its divisors is an integer number (3906669).

Almost surely, 2^25042625 is an apocalyptic number.

25042625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25042625 is a deficient number, since it is larger than the sum of its proper divisors (6210727).

25042625 is an equidigital number, since it uses as much as digits as its factorization.

25042625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200356 (or 200346 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 25042625 is about 5004.2606846566. The cubic root of 25042625 is about 292.5678611389.

Adding to 25042625 its reverse (52624052), we get a palindrome (77666677).

It can be divided in two parts, 250 and 42625, that added together give a cube (42875 = 35³).

The spelling of 25042625 in words is "twenty-five million, forty-two thousand, six hundred twenty-five".