25428544016 has 20 divisors (see below), whose sum is σ = 49891449600. Its totient is φ = 12553331232.

The previous prime is 25428543991. The next prime is 25428544021. The reversal of 25428544016 is 61044582452.

It is a super-2 number, since 2×25428544016² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10057496 + ... + 10060023.

It is an arithmetic number, because the mean of its divisors is an integer number (2494572480).

Almost surely, 2^25428544016 is an apocalyptic number.

It is an amenable number.

25428544016 is a deficient number, since it is larger than the sum of its proper divisors (24462905584).

25428544016 is a wasteful number, since it uses less digits than its factorization.

25428544016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20117606 (or 20117600 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 41.

The spelling of 25428544016 in words is "twenty-five billion, four hundred twenty-eight million, five hundred forty-four thousand, sixteen".