1288016525 has 12 divisors (see below), whose sum is σ = 1623325044. Its totient is φ = 1013520000.

The previous prime is 1288016503. The next prime is 1288016531. The reversal of 1288016525 is 5256108821.

It can be written as a sum of positive squares in 6 ways, for example, as 481626916 + 806389609 = 21946^2 + 28397^2 .

It is not a de Polignac number, because 1288016525 - 2³⁰ = 214274701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 420776 + ... + 423825.

It is an arithmetic number, because the mean of its divisors is an integer number (135277087).

Almost surely, 2^1288016525 is an apocalyptic number.

It is an amenable number.

1288016525 is a deficient number, since it is larger than the sum of its proper divisors (335308519).

1288016525 is an equidigital number, since it uses as much as digits as its factorization.

1288016525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844672 (or 844667 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 1288016525 is about 35888.9471146758. The cubic root of 1288016525 is about 1088.0290181693.

The spelling of 1288016525 in words is "one billion, two hundred eighty-eight million, sixteen thousand, five hundred twenty-five".