2565625051040 has 48 divisors (see below), whose sum is σ = 6061535975880. Its totient is φ = 1026208235520.

The previous prime is 2565625051013. The next prime is 2565625051057. The reversal of 2565625051040 is 401505265652.

It can be written as a sum of positive squares in 4 ways, for example, as 2479402950544 + 86222100496 = 1574612^2 + 293636^2 .

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, 3776096 + ... + 4403424.

Almost surely, 2^{2565625051040} is an apocalyptic number.

2565625051040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2565625051040 is an abundant number, since it is smaller than the sum of its proper divisors (3495910924840).

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

2565625051040 is a wasteful number, since it uses less digits than its factorization.

2565625051040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652905 (or 652897 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 2565625051040 in words is "two trillion, five hundred sixty-five billion, six hundred twenty-five million, fifty-one thousand, forty".