2545065540 has 36 divisors (see below), whose sum is σ = 7720032684. Its totient is φ = 678684096.

The previous prime is 2545065539. The next prime is 2545065571. The reversal of 2545065540 is 455605452.

2545065540 is a `hidden beast` number, since 2 + 5 + 4 + 50 + 65 + 540 = 666.

2545065540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 348643584 + 2196421956 = 18672^2 + 46866^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2545065495 and 2545065504.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7069447 + ... + 7069806.

Almost surely, 2^2545065540 is an apocalyptic number.

2545065540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2545065540 is an abundant number, since it is smaller than the sum of its proper divisors (5174967144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2545065540 is a wasteful number, since it uses less digits than its factorization.

2545065540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14139268 (or 14139263 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The square root of 2545065540 is about 50448.6425981909. The cubic root of 2545065540 is about 1365.3154043121.

The spelling of 2545065540 in words is "two billion, five hundred forty-five million, sixty-five thousand, five hundred forty".