25127460643 has 4 divisors (see below), whose sum is σ = 25601563728. Its totient is φ = 24653357560.

The previous prime is 25127460641. The next prime is 25127460649. The reversal of 25127460643 is 34606472152.

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 25127460643 - 2¹ = 25127460641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25127460596 and 25127460605.

It is not an unprimeable number, because it can be changed into a prime (25127460641) 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, 237051463 + ... + 237051568.

It is an arithmetic number, because the mean of its divisors is an integer number (6400390932).

Almost surely, 2^25127460643 is an apocalyptic number.

25127460643 is a deficient number, since it is larger than the sum of its proper divisors (474103085).

25127460643 is an equidigital number, since it uses as much as digits as its factorization.

25127460643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474103084.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 25127460643 in words is "twenty-five billion, one hundred twenty-seven million, four hundred sixty thousand, six hundred forty-three".