2125507700 has 18 divisors (see below), whose sum is σ = 4612351926. Its totient is φ = 850203040.

The previous prime is 2125507679. The next prime is 2125507721. The reversal of 2125507700 is 77055212.

It is an interprime number because it is at equal distance from previous prime (2125507679) and next prime (2125507721).

It can be written as a sum of positive squares in 3 ways, for example, as 478121956 + 1647385744 = 21866^2 + 40588^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10627439 + ... + 10627638.

Almost surely, 2^2125507700 is an apocalyptic number.

2125507700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2125507700 is an abundant number, since it is smaller than the sum of its proper divisors (2486844226).

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

2125507700 is a wasteful number, since it uses less digits than its factorization.

2125507700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21255091 (or 21255084 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 2125507700 is about 46103.2287372587. The cubic root of 2125507700 is about 1285.7431746007.

The spelling of 2125507700 in words is "two billion, one hundred twenty-five million, five hundred seven thousand, seven hundred".