1243049825 has 12 divisors (see below), whose sum is σ = 1622507760. Its totient is φ = 942100560.

The previous prime is 1243049813. The next prime is 1243049831. The reversal of 1243049825 is 5289403421.

It is not a de Polignac number, because 1243049825 - 2⁶ = 1243049761 is a prime.

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, 1307999 + ... + 1308948.

It is an arithmetic number, because the mean of its divisors is an integer number (135208980).

Almost surely, 2^1243049825 is an apocalyptic number.

It is an amenable number.

1243049825 is a deficient number, since it is larger than the sum of its proper divisors (379457935).

1243049825 is a wasteful number, since it uses less digits than its factorization.

1243049825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616976 (or 2616971 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1243049825 is about 35256.9117337296. The cubic root of 1243049825 is about 1075.2171402002.

The spelling of 1243049825 in words is "one billion, two hundred forty-three million, forty-nine thousand, eight hundred twenty-five".