25500050531 has 2 divisors, whose sum is σ = 25500050532. Its totient is φ = 25500050530.

The previous prime is 25500050509. The next prime is 25500050551. The reversal of 25500050531 is 13505000552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25500050531 - 2¹⁸ = 25499788387 is a prime.

It is a super-2 number, since 2×25500050531² (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 25500050531.

It is not a weakly prime, because it can be changed into another prime (25500050501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12750025265 + 12750025266.

It is an arithmetic number, because the mean of its divisors is an integer number (12750025266).

Almost surely, 2^25500050531 is an apocalyptic number.

25500050531 is a deficient number, since it is larger than the sum of its proper divisors (1).

25500050531 is an equidigital number, since it uses as much as digits as its factorization.

25500050531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 26.

The spelling of 25500050531 in words is "twenty-five billion, five hundred million, fifty thousand, five hundred thirty-one".