1250505133531 has 2 divisors, whose sum is σ = 1250505133532. Its totient is φ = 1250505133530.

The previous prime is 1250505133457. The next prime is 1250505133561. The reversal of 1250505133531 is 1353315050521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1250505133531 - 2⁹ = 1250505133019 is a prime.

It is a super-2 number, since 2×1250505133531² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1250505133561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625252566765 + 625252566766.

It is an arithmetic number, because the mean of its divisors is an integer number (625252566766).

Almost surely, 2^{1250505133531} is an apocalyptic number.

1250505133531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250505133531 is an equidigital number, since it uses as much as digits as its factorization.

1250505133531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33750, while the sum is 34.

The spelling of 1250505133531 in words is "one trillion, two hundred fifty billion, five hundred five million, one hundred thirty-three thousand, five hundred thirty-one".