25412531 has 2 divisors, whose sum is σ = 25412532. Its totient is φ = 25412530.

The previous prime is 25412473. The next prime is 25412537. The reversal of 25412531 is 13521452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25412531 is a prime.

It is a super-2 number, since 2×25412531² = 1291593463651922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25412497 and 25412506.

It is not a weakly prime, because it can be changed into another prime (25412537) 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, 12706265 + 12706266.

It is an arithmetic number, because the mean of its divisors is an integer number (12706266).

Almost surely, 2^25412531 is an apocalyptic number.

25412531 is a deficient number, since it is larger than the sum of its proper divisors (1).

25412531 is an equidigital number, since it uses as much as digits as its factorization.

25412531 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 25412531 is about 5041.0843079639. The cubic root of 25412531 is about 294.0013381709.

Adding to 25412531 its reverse (13521452), we get a palindrome (38933983).

The spelling of 25412531 in words is "twenty-five million, four hundred twelve thousand, five hundred thirty-one".