1525012613 has 2 divisors, whose sum is σ = 1525012614. Its totient is φ = 1525012612.

The previous prime is 1525012583. The next prime is 1525012651. The reversal of 1525012613 is 3162105251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1456338244 + 68674369 = 38162^2 + 8287^2 .

It is a cyclic number.

It is not a de Polignac number, because 1525012613 - 2⁶ = 1525012549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1525012213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 762506306 + 762506307.

It is an arithmetic number, because the mean of its divisors is an integer number (762506307).

Almost surely, 2^1525012613 is an apocalyptic number.

It is an amenable number.

1525012613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1525012613 is an equidigital number, since it uses as much as digits as its factorization.

1525012613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1525012613 is about 39051.4098721160. The cubic root of 1525012613 is about 1151.0419323175.

Adding to 1525012613 its reverse (3162105251), we get a palindrome (4687117864).

The spelling of 1525012613 in words is "one billion, five hundred twenty-five million, twelve thousand, six hundred thirteen".