25077616121 has 8 divisors (see below), whose sum is σ = 25532934984. Its totient is φ = 24623723520.

The previous prime is 25077616117. The next prime is 25077616163. The reversal of 25077616121 is 12161677052.

It can be written as a sum of positive squares in 4 ways, for example, as 5738820025 + 19338796096 = 75755^2 + 139064^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25077616121 - 2² = 25077616117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25077616111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321050 + ... + 391443.

It is an arithmetic number, because the mean of its divisors is an integer number (3191616873).

Almost surely, 2^25077616121 is an apocalyptic number.

It is an amenable number.

25077616121 is a deficient number, since it is larger than the sum of its proper divisors (455318863).

25077616121 is an equidigital number, since it uses as much as digits as its factorization.

25077616121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713131.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 25077616121 in words is "twenty-five billion, seventy-seven million, six hundred sixteen thousand, one hundred twenty-one".