243725051407 has 4 divisors (see below), whose sum is σ = 246810178720. Its totient is φ = 240639924096.

The previous prime is 243725051363. The next prime is 243725051431. The reversal of 243725051407 is 704150527342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243725051407 - 2¹⁹ = 243724527119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243725051407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243725051447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542563538 + ... + 1542563695.

It is an arithmetic number, because the mean of its divisors is an integer number (61702544680).

Almost surely, 2^243725051407 is an apocalyptic number.

243725051407 is a deficient number, since it is larger than the sum of its proper divisors (3085127313).

243725051407 is an equidigital number, since it uses as much as digits as its factorization.

243725051407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085127312.

The product of its (nonzero) digits is 235200, while the sum is 40.

Adding to 243725051407 its reverse (704150527342), we get a palindrome (947875578749).

The spelling of 243725051407 in words is "two hundred forty-three billion, seven hundred twenty-five million, fifty-one thousand, four hundred seven".