2526287780 has 12 divisors (see below), whose sum is σ = 5305204380. Its totient is φ = 1010515104.

The previous prime is 2526287779. The next prime is 2526287789. The reversal of 2526287780 is 877826252.

It can be written as a sum of positive squares in 2 ways, for example, as 355473316 + 2170814464 = 18854^2 + 46592^2 .

It is not an unprimeable number, because it can be changed into a prime (2526287789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63157175 + ... + 63157214.

It is an arithmetic number, because the mean of its divisors is an integer number (442100365).

Almost surely, 2^2526287780 is an apocalyptic number.

2526287780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2526287780 is an abundant number, since it is smaller than the sum of its proper divisors (2778916600).

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

2526287780 is a wasteful number, since it uses less digits than its factorization.

2526287780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126314398 (or 126314396 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 2526287780 is about 50262.1903621400. The cubic root of 2526287780 is about 1361.9492988660.

The spelling of 2526287780 in words is "two billion, five hundred twenty-six million, two hundred eighty-seven thousand, seven hundred eighty".