25725279516919 has 4 divisors (see below), whose sum is σ = 25725330166120. Its totient is φ = 25725228867720.

The previous prime is 25725279516877. The next prime is 25725279516983. The reversal of 25725279516919 is 91961597252752.

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 25725279516919 - 2⁹ = 25725279516407 is a prime.

It is a super-2 number, since 2×25725279516919² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25725279516119) 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, 24554937 + ... + 25581154.

It is an arithmetic number, because the mean of its divisors is an integer number (6431332541530).

Almost surely, 2^{25725279516919} is an apocalyptic number.

25725279516919 is a deficient number, since it is larger than the sum of its proper divisors (50649201).

25725279516919 is an equidigital number, since it uses as much as digits as its factorization.

25725279516919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50649200.

The product of its digits is 214326000, while the sum is 70.

The spelling of 25725279516919 in words is "twenty-five trillion, seven hundred twenty-five billion, two hundred seventy-nine million, five hundred sixteen thousand, nine hundred nineteen".