25425331 has 4 divisors (see below), whose sum is σ = 25452592. Its totient is φ = 25398072.

The previous prime is 25425329. The next prime is 25425343. The reversal of 25425331 is 13352452.

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

It is a cyclic number.

It is not a de Polignac number, because 25425331 - 2¹ = 25425329 is a prime.

It is a super-2 number, since 2×25425331² = 1292894912919122, 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 = 25425296 and 25425305.

It is not an unprimeable number, because it can be changed into a prime (25425311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12180 + ... + 14113.

It is an arithmetic number, because the mean of its divisors is an integer number (6363148).

Almost surely, 2^25425331 is an apocalyptic number.

25425331 is a deficient number, since it is larger than the sum of its proper divisors (27261).

25425331 is an equidigital number, since it uses as much as digits as its factorization.

25425331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27260.

The product of its digits is 3600, while the sum is 25.

The square root of 25425331 is about 5042.3537162718. The cubic root of 25425331 is about 294.0506915847.

Adding to 25425331 its reverse (13352452), we get a palindrome (38777783).

The spelling of 25425331 in words is "twenty-five million, four hundred twenty-five thousand, three hundred thirty-one".