1251413204 has 6 divisors (see below), whose sum is σ = 2189973114. Its totient is φ = 625706600.

The previous prime is 1251413159. The next prime is 1251413227. The reversal of 1251413204 is 4023141521.

It can be written as a sum of positive squares in only one way, i.e., 1249481104 + 1932100 = 35348^2 + 1390^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1251413204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156426647 + ... + 156426654.

It is an arithmetic number, because the mean of its divisors is an integer number (364995519).

Almost surely, 2^1251413204 is an apocalyptic number.

It is an amenable number.

1251413204 is a deficient number, since it is larger than the sum of its proper divisors (938559910).

1251413204 is a wasteful number, since it uses less digits than its factorization.

1251413204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312853305 (or 312853303 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1251413204 is about 35375.3191363696. The cubic root of 1251413204 is about 1077.6231462226.

Adding to 1251413204 its reverse (4023141521), we get a palindrome (5274554725).

The spelling of 1251413204 in words is "one billion, two hundred fifty-one million, four hundred thirteen thousand, two hundred four".