1225145032 has 16 divisors (see below), whose sum is σ = 2340490140. Its totient is φ = 601014336.

The previous prime is 1225145029. The next prime is 1225145039. The reversal of 1225145032 is 2305415221.

It can be written as a sum of positive squares in 2 ways, for example, as 1213407556 + 11737476 = 34834^2 + 3426^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1225144988 and 1225145006.

It is not an unprimeable number, because it can be changed into a prime (1225145039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1444323 + ... + 1445170.

Almost surely, 2^1225145032 is an apocalyptic number.

It is an amenable number.

1225145032 is a deficient number, since it is larger than the sum of its proper divisors (1115345108).

1225145032 is a wasteful number, since it uses less digits than its factorization.

1225145032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889552 (or 2889548 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1225145032 is about 35002.0718243935. The cubic root of 1225145032 is about 1070.0297054087.

The spelling of 1225145032 in words is "one billion, two hundred twenty-five million, one hundred forty-five thousand, thirty-two".