1125420553 has 8 divisors (see below), whose sum is σ = 1219334688. Its totient is φ = 1034585664.

The previous prime is 1125420529. The next prime is 1125420563. The reversal of 1125420553 is 3550245211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125420553 - 2²¹ = 1123323401 is a prime.

It is a super-2 number, since 2×1125420553² = 2533142842229651618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125420563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769051 + ... + 770512.

It is an arithmetic number, because the mean of its divisors is an integer number (152416836).

Almost surely, 2^1125420553 is an apocalyptic number.

It is an amenable number.

1125420553 is a deficient number, since it is larger than the sum of its proper divisors (93914135).

1125420553 is a wasteful number, since it uses less digits than its factorization.

1125420553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539623.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1125420553 is about 33547.2883106817. The cubic root of 1125420553 is about 1040.1714932310.

Adding to 1125420553 its reverse (3550245211), we get a palindrome (4675665764).

The spelling of 1125420553 in words is "one billion, one hundred twenty-five million, four hundred twenty thousand, five hundred fifty-three".