25379000121 has 16 divisors (see below), whose sum is σ = 33991550208. Its totient is φ = 16843065600.

The previous prime is 25379000083. The next prime is 25379000159. The reversal of 25379000121 is 12100097352.

It is an interprime number because it is at equal distance from previous prime (25379000083) and next prime (25379000159).

It is not a de Polignac number, because 25379000121 - 2⁷ = 25378999993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25379000161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574785 + ... + 617361.

It is an arithmetic number, because the mean of its divisors is an integer number (2124471888).

Almost surely, 2^25379000121 is an apocalyptic number.

25379000121 is the 85154-th nonagonal number.

It is an amenable number.

25379000121 is a deficient number, since it is larger than the sum of its proper divisors (8612550087).

25379000121 is a wasteful number, since it uses less digits than its factorization.

25379000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43472.

The product of its (nonzero) digits is 3780, while the sum is 30.

Adding to 25379000121 its reverse (12100097352), we get a palindrome (37479097473).

The spelling of 25379000121 in words is "twenty-five billion, three hundred seventy-nine million, one hundred twenty-one", and thus it is an aban number.