1243200025 has 12 divisors (see below), whose sum is σ = 1608593472. Its totient is φ = 951317840.

The previous prime is 1243200019. The next prime is 1243200029. The reversal of 1243200025 is 5200023421.

It is not a de Polignac number, because 1243200025 - 2³ = 1243200017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1243199975 and 1243200011.

It is not an unprimeable number, because it can be changed into a prime (1243200029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1080469 + ... + 1081618.

It is an arithmetic number, because the mean of its divisors is an integer number (134049456).

Almost surely, 2^1243200025 is an apocalyptic number.

It is an amenable number.

1243200025 is a deficient number, since it is larger than the sum of its proper divisors (365393447).

1243200025 is a wasteful number, since it uses less digits than its factorization.

1243200025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162120 (or 2162115 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1243200025 is about 35259.0417481814. The cubic root of 1243200025 is about 1075.2604452785.

Adding to 1243200025 its reverse (5200023421), we get a palindrome (6443223446).

The spelling of 1243200025 in words is "one billion, two hundred forty-three million, two hundred thousand, twenty-five".