1351211225 has 48 divisors (see below), whose sum is σ = 2106198528. Its totient is φ = 837008640.

The previous prime is 1351211209. The next prime is 1351211243. The reversal of 1351211225 is 5221121531.

It is not a de Polignac number, because 1351211225 - 2⁴ = 1351211209 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1351211225.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100607 + ... + 113243.

It is an arithmetic number, because the mean of its divisors is an integer number (43879136).

Almost surely, 2^1351211225 is an apocalyptic number.

It is an amenable number.

1351211225 is a deficient number, since it is larger than the sum of its proper divisors (754987303).

1351211225 is a wasteful number, since it uses less digits than its factorization.

1351211225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12714 (or 12709 counting only the distinct ones).

The product of its digits is 600, while the sum is 23.

The square root of 1351211225 is about 36758.8251308444. The cubic root of 1351211225 is about 1105.5398834602.

Adding to 1351211225 its reverse (5221121531), we get a palindrome (6572332756).

The spelling of 1351211225 in words is "one billion, three hundred fifty-one million, two hundred eleven thousand, two hundred twenty-five".