1525262113 has 4 divisors (see below), whose sum is σ = 1526824260. Its totient is φ = 1523699968.

The previous prime is 1525262087. The next prime is 1525262129. The reversal of 1525262113 is 3112625251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 574896529 + 950365584 = 23977^2 + 30828^2 .

It is a cyclic number.

It is not a de Polignac number, because 1525262113 - 2¹³ = 1525253921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1525262173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779608 + ... + 781561.

It is an arithmetic number, because the mean of its divisors is an integer number (381706065).

Almost surely, 2^1525262113 is an apocalyptic number.

It is an amenable number.

1525262113 is a deficient number, since it is larger than the sum of its proper divisors (1562147).

1525262113 is an equidigital number, since it uses as much as digits as its factorization.

1525262113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562146.

The product of its digits is 3600, while the sum is 28.

The square root of 1525262113 is about 39054.6042484110. The cubic root of 1525262113 is about 1151.1047010447.

Adding to 1525262113 its reverse (3112625251), we get a palindrome (4637887364).

The spelling of 1525262113 in words is "one billion, five hundred twenty-five million, two hundred sixty-two thousand, one hundred thirteen".