1525063223 has 4 divisors (see below), whose sum is σ = 1577651640. Its totient is φ = 1472474808.

The previous prime is 1525063171. The next prime is 1525063237. The reversal of 1525063223 is 3223605251.

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

It is a cyclic number.

It is not a de Polignac number, because 1525063223 - 2⁶ = 1525063159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 52588387 = 1525063223 / (1 + 5 + 2 + 5 + 0 + 6 + 3 + 2 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525063283) 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, 26294165 + ... + 26294222.

It is an arithmetic number, because the mean of its divisors is an integer number (394412910).

Almost surely, 2^1525063223 is an apocalyptic number.

1525063223 is a deficient number, since it is larger than the sum of its proper divisors (52588417).

1525063223 is an equidigital number, since it uses as much as digits as its factorization.

1525063223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52588416.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 1525063223 is about 39052.0578587096. The cubic root of 1525063223 is about 1151.0546652368.

Adding to 1525063223 its reverse (3223605251), we get a palindrome (4748668474).

The spelling of 1525063223 in words is "one billion, five hundred twenty-five million, sixty-three thousand, two hundred twenty-three".