1121625345 has 8 divisors (see below), whose sum is σ = 1794600576. Its totient is φ = 598200176.

The previous prime is 1121625313. The next prime is 1121625367. The reversal of 1121625345 is 5435261211.

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 1121625345 - 2⁵ = 1121625313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37387497 + ... + 37387526.

It is an arithmetic number, because the mean of its divisors is an integer number (224325072).

Almost surely, 2^1121625345 is an apocalyptic number.

1121625345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121625345 is a deficient number, since it is larger than the sum of its proper divisors (672975231).

1121625345 is an equidigital number, since it uses as much as digits as its factorization.

1121625345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74775031.

The product of its digits is 7200, while the sum is 30.

The square root of 1121625345 is about 33490.6754933369. The cubic root of 1121625345 is about 1039.0009343642. Note that the first 3 decimals are identical.

Adding to 1121625345 its reverse (5435261211), we get a palindrome (6556886556).

The spelling of 1121625345 in words is "one billion, one hundred twenty-one million, six hundred twenty-five thousand, three hundred forty-five".