1351021125 has 32 divisors (see below), whose sum is σ = 2366432640. Its totient is φ = 682617600.

The previous prime is 1351021123. The next prime is 1351021159. The reversal of 1351021125 is 5211201531.

It is not a de Polignac number, because 1351021125 - 2¹ = 1351021123 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351021121) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 87684 + ... + 101933.

It is an arithmetic number, because the mean of its divisors is an integer number (73951020).

Almost surely, 2^1351021125 is an apocalyptic number.

1351021125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1351021125 is a deficient number, since it is larger than the sum of its proper divisors (1015411515).

1351021125 is a wasteful number, since it uses less digits than its factorization.

1351021125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189654 (or 189644 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1351021125 is about 36756.2392662797. The cubic root of 1351021125 is about 1105.4880354134.

Adding to 1351021125 its reverse (5211201531), we get a palindrome (6562222656).

The spelling of 1351021125 in words is "one billion, three hundred fifty-one million, twenty-one thousand, one hundred twenty-five".