1525688063 has 4 divisors (see below), whose sum is σ = 1534211640. Its totient is φ = 1517164488.

The previous prime is 1525688041. The next prime is 1525688077. The reversal of 1525688063 is 3608865251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3608865251 = 45767 ⋅78853.

It is a cyclic number.

It is not a de Polignac number, because 1525688063 - 2²² = 1521493759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525688083) 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 in 3 ways as a sum of consecutive naturals, for example, 4261520 + ... + 4261877.

It is an arithmetic number, because the mean of its divisors is an integer number (383552910).

Almost surely, 2^1525688063 is an apocalyptic number.

1525688063 is a deficient number, since it is larger than the sum of its proper divisors (8523577).

1525688063 is an equidigital number, since it uses as much as digits as its factorization.

1525688063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8523576.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 1525688063 is about 39060.0571300145. The cubic root of 1525688063 is about 1151.2118449050.

The spelling of 1525688063 in words is "one billion, five hundred twenty-five million, six hundred eighty-eight thousand, sixty-three".