1578488225 has 24 divisors (see below), whose sum is σ = 2025703680. Its totient is φ = 1218888000.

The previous prime is 1578488221. The next prime is 1578488227. The reversal of 1578488225 is 5228848751.

It is not a de Polignac number, because 1578488225 - 2² = 1578488221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1578488221) 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, 322295 + ... + 327155.

It is an arithmetic number, because the mean of its divisors is an integer number (84404320).

Almost surely, 2^1578488225 is an apocalyptic number.

It is an amenable number.

1578488225 is a deficient number, since it is larger than the sum of its proper divisors (447215455).

1578488225 is a wasteful number, since it uses less digits than its factorization.

1578488225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5321 (or 5316 counting only the distinct ones).

The product of its digits is 1433600, while the sum is 50.

The square root of 1578488225 is about 39730.1928638661. The cubic root of 1578488225 is about 1164.3416924635.

The spelling of 1578488225 in words is "one billion, five hundred seventy-eight million, four hundred eighty-eight thousand, two hundred twenty-five".