2525577221660 has 24 divisors (see below), whose sum is σ = 5615695234800. Its totient is φ = 950805542144.

The previous prime is 2525577221627. The next prime is 2525577221719. The reversal of 2525577221660 is 661227755252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2525577221599 and 2525577221608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3714083810 + ... + 3714084489.

It is an arithmetic number, because the mean of its divisors is an integer number (233987301450).

Almost surely, 2^{2525577221660} is an apocalyptic number.

2525577221660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2525577221660 is an abundant number, since it is smaller than the sum of its proper divisors (3090118013140).

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

2525577221660 is a wasteful number, since it uses less digits than its factorization.

2525577221660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7428168325 (or 7428168323 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 50.

The spelling of 2525577221660 in words is "two trillion, five hundred twenty-five billion, five hundred seventy-seven million, two hundred twenty-one thousand, six hundred sixty".