1212641425 has 12 divisors (see below), whose sum is σ = 1505196940. Its totient is φ = 969131520.

The previous prime is 1212641411. The next prime is 1212641449. The reversal of 1212641425 is 5241462121.

It can be written as a sum of positive squares in 6 ways, for example, as 9314704 + 1203326721 = 3052^2 + 34689^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1212641425 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212641393 and 1212641402.

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, 1189 + ... + 49261.

Almost surely, 2^1212641425 is an apocalyptic number.

It is an amenable number.

1212641425 is a deficient number, since it is larger than the sum of its proper divisors (292555515).

1212641425 is a wasteful number, since it uses less digits than its factorization.

1212641425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49092 (or 49087 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 1212641425 is about 34823.0013783993. The cubic root of 1212641425 is about 1066.3770749768.

The spelling of 1212641425 in words is "one billion, two hundred twelve million, six hundred forty-one thousand, four hundred twenty-five".