25230212531 has 2 divisors, whose sum is σ = 25230212532. Its totient is φ = 25230212530.

The previous prime is 25230212489. The next prime is 25230212563. The reversal of 25230212531 is 13521203252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25230212531 is a prime.

It is a super-2 number, since 2×25230212531² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25230212531.

It is not a weakly prime, because it can be changed into another prime (25230272531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12615106265 + 12615106266.

It is an arithmetic number, because the mean of its divisors is an integer number (12615106266).

Almost surely, 2^25230212531 is an apocalyptic number.

25230212531 is a deficient number, since it is larger than the sum of its proper divisors (1).

25230212531 is an equidigital number, since it uses as much as digits as its factorization.

25230212531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 25230212531 its reverse (13521203252), we get a palindrome (38751415783).

The spelling of 25230212531 in words is "twenty-five billion, two hundred thirty million, two hundred twelve thousand, five hundred thirty-one".