25415240123 has 32 divisors (see below), whose sum is σ = 32943805440. Its totient is φ = 19040469120.

The previous prime is 25415240119. The next prime is 25415240153. The reversal of 25415240123 is 32104251452.

It is a cyclic number.

It is not a de Polignac number, because 25415240123 - 2² = 25415240119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25415240153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6604586 + ... + 6608432.

It is an arithmetic number, because the mean of its divisors is an integer number (1029493920).

Almost surely, 2^25415240123 is an apocalyptic number.

25415240123 is a deficient number, since it is larger than the sum of its proper divisors (7528565317).

25415240123 is a wasteful number, since it uses less digits than its factorization.

25415240123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7707.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 25415240123 its reverse (32104251452), we get a palindrome (57519491575).

The spelling of 25415240123 in words is "twenty-five billion, four hundred fifteen million, two hundred forty thousand, one hundred twenty-three".