2525551780 has 12 divisors (see below), whose sum is σ = 5303658780. Its totient is φ = 1010220704.

The previous prime is 2525551757. The next prime is 2525551871. The reversal of 2525551780 is 871555252.

It can be written as a sum of positive squares in 2 ways, for example, as 1518505024 + 1007046756 = 38968^2 + 31734^2 .

It is a super-2 number, since 2×2525551780² = 12756823586922336800, which 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, 63138775 + ... + 63138814.

It is an arithmetic number, because the mean of its divisors is an integer number (441971565).

Almost surely, 2^2525551780 is an apocalyptic number.

2525551780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2525551780 is an abundant number, since it is smaller than the sum of its proper divisors (2778107000).

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

2525551780 is a wasteful number, since it uses less digits than its factorization.

2525551780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126277598 (or 126277596 counting only the distinct ones).

The product of its (nonzero) digits is 140000, while the sum is 40.

The square root of 2525551780 is about 50254.8682218947. The cubic root of 2525551780 is about 1361.8170241436.

The spelling of 2525551780 in words is "two billion, five hundred twenty-five million, five hundred fifty-one thousand, seven hundred eighty".