1302521225 has 12 divisors (see below), whose sum is σ = 1670821260. Its totient is φ = 1006084800.

The previous prime is 1302521191. The next prime is 1302521239. The reversal of 1302521225 is 5221252031.

It can be written as a sum of positive squares in 6 ways, for example, as 38576521 + 1263944704 = 6211^2 + 35552^2 .

It is not a de Polignac number, because 1302521225 - 2⁶ = 1302521161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1302521225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 897566 + ... + 899015.

It is an arithmetic number, because the mean of its divisors is an integer number (139235105).

Almost surely, 2^1302521225 is an apocalyptic number.

It is an amenable number.

1302521225 is a deficient number, since it is larger than the sum of its proper divisors (368300035).

1302521225 is a wasteful number, since it uses less digits than its factorization.

1302521225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796620 (or 1796615 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1302521225 is about 36090.4589192213. The cubic root of 1302521225 is about 1092.0979779545.

Adding to 1302521225 its reverse (5221252031), we get a palindrome (6523773256).

The spelling of 1302521225 in words is "one billion, three hundred two million, five hundred twenty-one thousand, two hundred twenty-five".