1525311133 has 2 divisors, whose sum is σ = 1525311134. Its totient is φ = 1525311132.

The previous prime is 1525311121. The next prime is 1525311149. The reversal of 1525311133 is 3311135251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1286083044 + 239228089 = 35862^2 + 15467^2 .

It is an emirp because it is prime and its reverse (3311135251) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1525311133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1525311098 and 1525311107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1525311113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 762655566 + 762655567.

It is an arithmetic number, because the mean of its divisors is an integer number (762655567).

Almost surely, 2^1525311133 is an apocalyptic number.

It is an amenable number.

1525311133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1525311133 is an equidigital number, since it uses as much as digits as its factorization.

1525311133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350, while the sum is 25.

The square root of 1525311133 is about 39055.2318262227. The cubic root of 1525311133 is about 1151.1170325968.

Adding to 1525311133 its reverse (3311135251), we get a palindrome (4836446384).

It can be divided in two parts, 152531 and 1133, that added together give a square (153664 = 392²).

The spelling of 1525311133 in words is "one billion, five hundred twenty-five million, three hundred eleven thousand, one hundred thirty-three".