1225023524 has 6 divisors (see below), whose sum is σ = 2143791174. Its totient is φ = 612511760.

The previous prime is 1225023521. The next prime is 1225023571. The reversal of 1225023524 is 4253205221.

It can be written as a sum of positive squares in only one way, i.e., 1036840000 + 188183524 = 32200^2 + 13718^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1225023493 and 1225023502.

It is not an unprimeable number, because it can be changed into a prime (1225023521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153127937 + ... + 153127944.

It is an arithmetic number, because the mean of its divisors is an integer number (357298529).

Almost surely, 2^1225023524 is an apocalyptic number.

It is an amenable number.

1225023524 is a deficient number, since it is larger than the sum of its proper divisors (918767650).

1225023524 is a wasteful number, since it uses less digits than its factorization.

1225023524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306255885 (or 306255883 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1225023524 is about 35000.3360555295. The cubic root of 1225023524 is about 1069.9943296057.

Adding to 1225023524 its reverse (4253205221), we get a palindrome (5478228745).

The spelling of 1225023524 in words is "one billion, two hundred twenty-five million, twenty-three thousand, five hundred twenty-four".