25311025 has 12 divisors (see below), whose sum is σ = 31523404. Its totient is φ = 20160000.

The previous prime is 25311001. The next prime is 25311031. The reversal of 25311025 is 52011352.

It can be written as a sum of positive squares in 6 ways, for example, as 1962801 + 23348224 = 1401^2 + 4832^2 .

It is not a de Polignac number, because 25311025 - 2⁵ = 25310993 is a prime.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25310993 and 25311011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3925 + ... + 8125.

Almost surely, 2^25311025 is an apocalyptic number.

25311025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25311025 is a deficient number, since it is larger than the sum of its proper divisors (6212379).

25311025 is a wasteful number, since it uses less digits than its factorization.

25311025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4452 (or 4447 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 25311025 is about 5031.0063605605. The cubic root of 25311025 is about 293.6093698364.

Adding to 25311025 its reverse (52011352), we get a palindrome (77322377).

The spelling of 25311025 in words is "twenty-five million, three hundred eleven thousand, twenty-five".