1223491425 has 24 divisors (see below), whose sum is σ = 2178443904. Its totient is φ = 602333760.

The previous prime is 1223491421. The next prime is 1223491439. The reversal of 1223491425 is 5241943221.

It is not a de Polignac number, because 1223491425 - 2² = 1223491421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223491421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 626457 + ... + 628406.

It is an arithmetic number, because the mean of its divisors is an integer number (90768496).

Almost surely, 2^1223491425 is an apocalyptic number.

1223491425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1223491425 is a deficient number, since it is larger than the sum of its proper divisors (954952479).

1223491425 is a wasteful number, since it uses less digits than its factorization.

1223491425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254889 (or 1254884 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 1223491425 is about 34978.4422895017. The cubic root of 1223491425 is about 1069.5480739194.

The spelling of 1223491425 in words is "one billion, two hundred twenty-three million, four hundred ninety-one thousand, four hundred twenty-five".