1051320225 has 24 divisors (see below), whose sum is σ = 1813758912. Its totient is φ = 536324800.

The previous prime is 1051320223. The next prime is 1051320253. The reversal of 1051320225 is 5220231501.

It is not a de Polignac number, because 1051320225 - 2¹ = 1051320223 is a prime.

It is a super-2 number, since 2×1051320225² = 2210548430988101250, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1051320223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303006 + ... + 306455.

It is an arithmetic number, because the mean of its divisors is an integer number (75573288).

Almost surely, 2^1051320225 is an apocalyptic number.

1051320225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1051320225 is a deficient number, since it is larger than the sum of its proper divisors (762438687).

1051320225 is a wasteful number, since it uses less digits than its factorization.

1051320225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609497 (or 609492 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1051320225 is about 32424.0686065151. The cubic root of 1051320225 is about 1016.8221694716.

Adding to 1051320225 its reverse (5220231501), we get a palindrome (6271551726).

The spelling of 1051320225 in words is "one billion, fifty-one million, three hundred twenty thousand, two hundred twenty-five".