1212493825 has 6 divisors (see below), whose sum is σ = 1503492374. Its totient is φ = 969995040.

The previous prime is 1212493819. The next prime is 1212493847. The reversal of 1212493825 is 5283942121.

It can be written as a sum of positive squares in 3 ways, for example, as 415222129 + 797271696 = 20377^2 + 28236^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1212493825 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24249852 + ... + 24249901.

Almost surely, 2^1212493825 is an apocalyptic number.

It is an amenable number.

1212493825 is a deficient number, since it is larger than the sum of its proper divisors (290998549).

1212493825 is an equidigital number, since it uses as much as digits as its factorization.

1212493825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48499763 (or 48499758 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 1212493825 is about 34820.8820250148. The cubic root of 1212493825 is about 1066.3338075444. Note that the first 3 decimals are identical.

The spelling of 1212493825 in words is "one billion, two hundred twelve million, four hundred ninety-three thousand, eight hundred twenty-five".