2645861525 has 12 divisors (see below), whose sum is σ = 3304476000. Its totient is φ = 2101458480.

The previous prime is 2645861507. The next prime is 2645861539. The reversal of 2645861525 is 5251685462.

It is a happy number.

2645861525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2645861525 - 2⁸ = 2645861269 is a prime.

It is a Curzon number.

It is a congruent number.

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, 377225 + ... + 384174.

It is an arithmetic number, because the mean of its divisors is an integer number (275373000).

Almost surely, 2^2645861525 is an apocalyptic number.

2645861525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2645861525 is a deficient number, since it is larger than the sum of its proper divisors (658614475).

2645861525 is a wasteful number, since it uses less digits than its factorization.

2645861525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761548 (or 761543 counting only the distinct ones).

The product of its digits is 576000, while the sum is 44.

The square root of 2645861525 is about 51437.9385765021. The cubic root of 2645861525 is about 1383.1067590724.

The spelling of 2645861525 in words is "two billion, six hundred forty-five million, eight hundred sixty-one thousand, five hundred twenty-five".