1121475225 has 48 divisors (see below), whose sum is σ = 2039369472. Its totient is φ = 540341760.

The previous prime is 1121475221. The next prime is 1121475241. The reversal of 1121475225 is 5225741211.

It is a happy number.

It is not a de Polignac number, because 1121475225 - 2² = 1121475221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121475192 and 1121475201.

It is not an unprimeable number, because it can be changed into a prime (1121475221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33589 + ... + 58061.

It is an arithmetic number, because the mean of its divisors is an integer number (42486864).

Almost surely, 2^1121475225 is an apocalyptic number.

1121475225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121475225 is a deficient number, since it is larger than the sum of its proper divisors (917894247).

1121475225 is a wasteful number, since it uses less digits than its factorization.

1121475225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24546 (or 24541 counting only the distinct ones).

The product of its digits is 5600, while the sum is 30.

The square root of 1121475225 is about 33488.4341974957. The cubic root of 1121475225 is about 1038.9545784872.

The spelling of 1121475225 in words is "one billion, one hundred twenty-one million, four hundred seventy-five thousand, two hundred twenty-five".