25064121103 has 4 divisors (see below), whose sum is σ = 28644709840. Its totient is φ = 21483532368.

The previous prime is 25064121101. The next prime is 25064121163. The reversal of 25064121103 is 30112146052.

It is a happy number.

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 25064121103 - 2¹ = 25064121101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25064121101) 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, 1790294358 + ... + 1790294371.

It is an arithmetic number, because the mean of its divisors is an integer number (7161177460).

Almost surely, 2^25064121103 is an apocalyptic number.

25064121103 is a deficient number, since it is larger than the sum of its proper divisors (3580588737).

25064121103 is an equidigital number, since it uses as much as digits as its factorization.

25064121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580588736.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 25064121103 its reverse (30112146052), we get a palindrome (55176267155).

The spelling of 25064121103 in words is "twenty-five billion, sixty-four million, one hundred twenty-one thousand, one hundred three".