1245524004 has 18 divisors (see below), whose sum is σ = 3148407990. Its totient is φ = 415174656.

The previous prime is 1245524003. The next prime is 1245524041. The reversal of 1245524004 is 4004255421.

It can be written as a sum of positive squares in only one way, i.e., 1207701504 + 37822500 = 34752^2 + 6150^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1245524003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17298909 + ... + 17298980.

It is an arithmetic number, because the mean of its divisors is an integer number (174911555).

Almost surely, 2^1245524004 is an apocalyptic number.

It is an amenable number.

1245524004 is an abundant number, since it is smaller than the sum of its proper divisors (1902883986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245524004 is a wasteful number, since it uses less digits than its factorization.

1245524004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34597899 (or 34597894 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1245524004 is about 35291.9821489244. The cubic root of 1245524004 is about 1075.9300417934.

Adding to 1245524004 its reverse (4004255421), we get a palindrome (5249779425).

The spelling of 1245524004 in words is "one billion, two hundred forty-five million, five hundred twenty-four thousand, four".