1203400025 has 24 divisors (see below), whose sum is σ = 1535240280. Its totient is φ = 935055360.

The previous prime is 1203400013. The next prime is 1203400073. The reversal of 1203400025 is 5200043021.

It can be written as a sum of positive squares in 12 ways, for example, as 188595289 + 1014804736 = 13733^2 + 31856^2 .

It is not a de Polignac number, because 1203400025 - 2¹² = 1203395929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1203399976 and 1203400012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 988217 + ... + 989433.

It is an arithmetic number, because the mean of its divisors is an integer number (63968345).

Almost surely, 2^1203400025 is an apocalyptic number.

It is an amenable number.

1203400025 is a deficient number, since it is larger than the sum of its proper divisors (331840255).

1203400025 is a wasteful number, since it uses less digits than its factorization.

1203400025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333 (or 2328 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1203400025 is about 34690.0565724532. The cubic root of 1203400025 is about 1063.6612521543.

Adding to 1203400025 its reverse (5200043021), we get a palindrome (6403443046).

The spelling of 1203400025 in words is "one billion, two hundred three million, four hundred thousand, twenty-five".