1125251445 has 16 divisors (see below), whose sum is σ = 1829918592. Its totient is φ = 590295360.

The previous prime is 1125251443. The next prime is 1125251447. The reversal of 1125251445 is 5441525211.

It is an interprime number because it is at equal distance from previous prime (1125251443) and next prime (1125251447).

It is not a de Polignac number, because 1125251445 - 2¹ = 1125251443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125251441) 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, 613977 + ... + 615806.

It is an arithmetic number, because the mean of its divisors is an integer number (114369912).

Almost surely, 2^1125251445 is an apocalyptic number.

1125251445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125251445 is a deficient number, since it is larger than the sum of its proper divisors (704667147).

1125251445 is a wasteful number, since it uses less digits than its factorization.

1125251445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229852.

The product of its digits is 8000, while the sum is 30.

The square root of 1125251445 is about 33544.7677738273. The cubic root of 1125251445 is about 1040.1193911874.

Adding to 1125251445 its reverse (5441525211), we get a palindrome (6566776656).

The spelling of 1125251445 in words is "one billion, one hundred twenty-five million, two hundred fifty-one thousand, four hundred forty-five".