25428897895 has 8 divisors (see below), whose sum is σ = 30612797280. Its totient is φ = 20277705120.

The previous prime is 25428897889. The next prime is 25428897913. The reversal of 25428897895 is 59879882452.

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

It is not a de Polignac number, because 25428897895 - 2³ = 25428897887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25428897895.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8174940 + ... + 8178049.

It is an arithmetic number, because the mean of its divisors is an integer number (3826599660).

Almost surely, 2^25428897895 is an apocalyptic number.

25428897895 is a deficient number, since it is larger than the sum of its proper divisors (5183899385).

25428897895 is a wasteful number, since it uses less digits than its factorization.

25428897895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16353305.

The product of its digits is 116121600, while the sum is 67.

The spelling of 25428897895 in words is "twenty-five billion, four hundred twenty-eight million, eight hundred ninety-seven thousand, eight hundred ninety-five".