1320126525 has 72 divisors (see below), whose sum is σ = 2465496960. Its totient is φ = 692530560.

The previous prime is 1320126499. The next prime is 1320126539. The reversal of 1320126525 is 5256210231.

It is a happy number.

1320126525 is a `hidden beast` number, since 1 + 3 + 2 + 0 + 1 + 2 + 652 + 5 = 666.

It is not a de Polignac number, because 1320126525 - 2⁶ = 1320126461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3596892 + ... + 3597258.

Almost surely, 2^1320126525 is an apocalyptic number.

1320126525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1320126525 is a deficient number, since it is larger than the sum of its proper divisors (1145370435).

1320126525 is an equidigital number, since it uses as much as digits as its factorization.

1320126525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1320126525 is about 36333.5454504512. The cubic root of 1320126525 is about 1096.9963581117.

Adding to 1320126525 its reverse (5256210231), we get a palindrome (6576336756).

The spelling of 1320126525 in words is "one billion, three hundred twenty million, one hundred twenty-six thousand, five hundred twenty-five".