1211367425 has 12 divisors (see below), whose sum is σ = 1534056576. Its totient is φ = 948474000.

The previous prime is 1211367403. The next prime is 1211367433. The reversal of 1211367425 is 5247631121.

It is not a de Polignac number, because 1211367425 - 2¹⁴ = 1211351041 is a prime.

It is a super-2 number, since 2×1211367425² = 2934822076702261250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211367391 and 1211367400.

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, 514301 + ... + 516650.

It is an arithmetic number, because the mean of its divisors is an integer number (127838048).

It is a Proth number, since it is equal to 4621 ⋅ 2¹⁸ + 1 and 4621 < 2¹⁸.

Almost surely, 2^1211367425 is an apocalyptic number.

It is an amenable number.

1211367425 is a deficient number, since it is larger than the sum of its proper divisors (322689151).

1211367425 is a wasteful number, since it uses less digits than its factorization.

1211367425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031008 (or 1031003 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 1211367425 is about 34804.7040642497. The cubic root of 1211367425 is about 1066.0034991854.

Adding to 1211367425 its reverse (5247631121), we get a palindrome (6458998546).

The spelling of 1211367425 in words is "one billion, two hundred eleven million, three hundred sixty-seven thousand, four hundred twenty-five".