25253031 has 4 divisors (see below), whose sum is σ = 33670712. Its totient is φ = 16835352.

The previous prime is 25253027. The next prime is 25253047. The reversal of 25253031 is 13035252.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25253031 - 2² = 25253027 is a prime.

It is a super-2 number, since 2×25253031² = 1275431149373922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25252989 and 25253007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25253051) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4208836 + ... + 4208841.

It is an arithmetic number, because the mean of its divisors is an integer number (8417678).

Almost surely, 2^25253031 is an apocalyptic number.

25253031 is a deficient number, since it is larger than the sum of its proper divisors (8417681).

25253031 is an equidigital number, since it uses as much as digits as its factorization.

25253031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8417680.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 25253031 is about 5025.2393972825. The cubic root of 25253031 is about 293.3849537540.

Adding to 25253031 its reverse (13035252), we get a palindrome (38288283).

The spelling of 25253031 in words is "twenty-five million, two hundred fifty-three thousand, thirty-one".