1147213525 has 6 divisors (see below), whose sum is σ = 1422544802. Its totient is φ = 917770800.

The previous prime is 1147213511. The next prime is 1147213531. The reversal of 1147213525 is 5253127411.

It can be written as a sum of positive squares in 3 ways, for example, as 322777156 + 824436369 = 17966^2 + 28713^2 .

It is not a de Polignac number, because 1147213525 - 2⁵ = 1147213493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22944246 + ... + 22944295.

Almost surely, 2^1147213525 is an apocalyptic number.

It is an amenable number.

1147213525 is a deficient number, since it is larger than the sum of its proper divisors (275331277).

1147213525 is an equidigital number, since it uses as much as digits as its factorization.

1147213525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45888551 (or 45888546 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 1147213525 is about 33870.5406658943. The cubic root of 1147213525 is about 1046.8426772823.

The spelling of 1147213525 in words is "one billion, one hundred forty-seven million, two hundred thirteen thousand, five hundred twenty-five".