1125498451 has 16 divisors (see below), whose sum is σ = 1422448128. Its totient is φ = 864993600.

The previous prime is 1125498443. The next prime is 1125498457. The reversal of 1125498451 is 1548945211.

It is a cyclic number.

It is not a de Polignac number, because 1125498451 - 2³ = 1125498443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125498457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94495 + ... + 105736.

It is an arithmetic number, because the mean of its divisors is an integer number (88903008).

Almost surely, 2^1125498451 is an apocalyptic number.

1125498451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1125498451 is a deficient number, since it is larger than the sum of its proper divisors (296949677).

1125498451 is a wasteful number, since it uses less digits than its factorization.

1125498451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200322.

The product of its digits is 57600, while the sum is 40.

The square root of 1125498451 is about 33548.4493084256. The cubic root of 1125498451 is about 1040.1954917885.

The spelling of 1125498451 in words is "one billion, one hundred twenty-five million, four hundred ninety-eight thousand, four hundred fifty-one".