1204025403 has 24 divisors (see below), whose sum is σ = 1875536208. Its totient is φ = 685042176.

The previous prime is 1204025363. The next prime is 1204025429. The reversal of 1204025403 is 3045204021.

It is not a de Polignac number, because 1204025403 - 2²¹ = 1201928251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1204025403.

It is not an unprimeable number, because it can be changed into a prime (1204025483) 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, 16675 + ... + 51827.

It is an arithmetic number, because the mean of its divisors is an integer number (78147342).

Almost surely, 2^1204025403 is an apocalyptic number.

1204025403 is a deficient number, since it is larger than the sum of its proper divisors (671510805).

1204025403 is a wasteful number, since it uses less digits than its factorization.

1204025403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35403 (or 35396 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1204025403 is about 34699.0691950087. The cubic root of 1204025403 is about 1063.8454732883.

Adding to 1204025403 its reverse (3045204021), we get a palindrome (4249229424).

The spelling of 1204025403 in words is "one billion, two hundred four million, twenty-five thousand, four hundred three".