1011749225 has 6 divisors (see below), whose sum is σ = 1254569070. Its totient is φ = 809399360.

The previous prime is 1011749197. The next prime is 1011749239. The reversal of 1011749225 is 5229471101.

It can be written as a sum of positive squares in 3 ways, for example, as 361 + 1011748864 = 19^2 + 31808^2 .

It is not a de Polignac number, because 1011749225 - 2²⁴ = 994972009 is a prime.

It is a super-3 number, since 3×1011749225³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011749191 and 1011749200.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20234960 + ... + 20235009.

It is an arithmetic number, because the mean of its divisors is an integer number (209094845).

Almost surely, 2^1011749225 is an apocalyptic number.

It is an amenable number.

1011749225 is a deficient number, since it is larger than the sum of its proper divisors (242819845).

1011749225 is an equidigital number, since it uses as much as digits as its factorization.

1011749225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40469979 (or 40469974 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1011749225 is about 31808.0056746725. The cubic root of 1011749225 is about 1003.9011694197.

The spelling of 1011749225 in words is "one billion, eleven million, seven hundred forty-nine thousand, two hundred twenty-five".