1151421325 has 12 divisors (see below), whose sum is σ = 1430389600. Its totient is φ = 919442160.

The previous prime is 1151421319. The next prime is 1151421347. The reversal of 1151421325 is 5231241511.

It is not a de Polignac number, because 1151421325 - 2¹⁷ = 1151290253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1151421325.

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 11 ways as a sum of consecutive naturals, for example, 28425 + ... + 55774.

Almost surely, 2^1151421325 is an apocalyptic number.

It is an amenable number.

1151421325 is a deficient number, since it is larger than the sum of its proper divisors (278968275).

1151421325 is an equidigital number, since it uses as much as digits as its factorization.

1151421325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84756 (or 84751 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 1151421325 is about 33932.5997383048. The cubic root of 1151421325 is about 1048.1210007934.

Adding to 1151421325 its reverse (5231241511), we get a palindrome (6382662836).

The spelling of 1151421325 in words is "one billion, one hundred fifty-one million, four hundred twenty-one thousand, three hundred twenty-five".