250515131 has 2 divisors, whose sum is σ = 250515132. Its totient is φ = 250515130.

The previous prime is 250515107. The next prime is 250515143. The reversal of 250515131 is 131515052.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 250515131 - 2¹⁴ = 250498747 is a prime.

It is a super-2 number, since 2×250515131² = 125515661719894322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 250515097 and 250515106.

It is not a weakly prime, because it can be changed into another prime (250515101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125257565 + 125257566.

It is an arithmetic number, because the mean of its divisors is an integer number (125257566).

Almost surely, 2^250515131 is an apocalyptic number.

250515131 is a deficient number, since it is larger than the sum of its proper divisors (1).

250515131 is an equidigital number, since it uses as much as digits as its factorization.

250515131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 250515131 is about 15827.6697905914. The cubic root of 250515131 is about 630.3929110296.

The spelling of 250515131 in words is "two hundred fifty million, five hundred fifteen thousand, one hundred thirty-one".