25425131 has 2 divisors, whose sum is σ = 25425132. Its totient is φ = 25425130.

The previous prime is 25425119. The next prime is 25425133. The reversal of 25425131 is 13152452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25425131 - 2⁶ = 25425067 is a prime.

It is a super-2 number, since 2×25425131² = 1292874572734322, which contains 22 as substring.

Together with 25425133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25425097 and 25425106.

It is not a weakly prime, because it can be changed into another prime (25425133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12712565 + 12712566.

It is an arithmetic number, because the mean of its divisors is an integer number (12712566).

Almost surely, 2^25425131 is an apocalyptic number.

25425131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25425131 is an equidigital number, since it uses as much as digits as its factorization.

25425131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 25425131 is about 5042.3338842246. Note that the first 3 decimals coincide. The cubic root of 25425131 is about 294.0499205650.

Adding to 25425131 its reverse (13152452), we get a palindrome (38577583).

The spelling of 25425131 in words is "twenty-five million, four hundred twenty-five thousand, one hundred thirty-one".