25022531 has 2 divisors, whose sum is σ = 25022532. Its totient is φ = 25022530.

The previous prime is 25022527. The next prime is 25022533. The reversal of 25022531 is 13522052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25022531 - 2² = 25022527 is a prime.

It is a super-2 number, since 2×25022531² = 1252254115291922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 25022533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25022533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12511265 + 12511266.

It is an arithmetic number, because the mean of its divisors is an integer number (12511266).

Almost surely, 2^25022531 is an apocalyptic number.

25022531 is a deficient number, since it is larger than the sum of its proper divisors (1).

25022531 is an equidigital number, since it uses as much as digits as its factorization.

25022531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 25022531 is about 5002.2525925827. The cubic root of 25022531 is about 292.4895888373.

Adding to 25022531 its reverse (13522052), we get a palindrome (38544583).

The spelling of 25022531 in words is "twenty-five million, twenty-two thousand, five hundred thirty-one".