25214015543531 has 2 divisors, whose sum is σ = 25214015543532. Its totient is φ = 25214015543530.

The previous prime is 25214015543489. The next prime is 25214015543557. The reversal of 25214015543531 is 13534551041252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25214015543531 is a prime.

It is a super-2 number, since 2×25214015543531² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25214015540531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12607007771765 + 12607007771766.

It is an arithmetic number, because the mean of its divisors is an integer number (12607007771766).

Almost surely, 2^{25214015543531} is an apocalyptic number.

25214015543531 is a deficient number, since it is larger than the sum of its proper divisors (1).

25214015543531 is an equidigital number, since it uses as much as digits as its factorization.

25214015543531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360000, while the sum is 41.

Adding to 25214015543531 its reverse (13534551041252), we get a palindrome (38748566584783).

The spelling of 25214015543531 in words is "twenty-five trillion, two hundred fourteen billion, fifteen million, five hundred forty-three thousand, five hundred thirty-one".