1525251131 has 2 divisors, whose sum is σ = 1525251132. Its totient is φ = 1525251130.

The previous prime is 1525251121. The next prime is 1525251173. The reversal of 1525251131 is 1311525251.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1525251131 is a prime.

It is a super-2 number, since 2×1525251131² = 4652782025233558322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1525251131.

It is not a weakly prime, because it can be changed into another prime (1525251121) 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, 762625565 + 762625566.

It is an arithmetic number, because the mean of its divisors is an integer number (762625566).

Almost surely, 2^1525251131 is an apocalyptic number.

1525251131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1525251131 is an equidigital number, since it uses as much as digits as its factorization.

1525251131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1500, while the sum is 26.

The square root of 1525251131 is about 39054.4636501386. The cubic root of 1525251131 is about 1151.1019383584.

Adding to 1525251131 its reverse (1311525251), we get a palindrome (2836776382).

The spelling of 1525251131 in words is "one billion, five hundred twenty-five million, two hundred fifty-one thousand, one hundred thirty-one".