2125907766 has 24 divisors (see below), whose sum is σ = 4877083224. Its totient is φ = 666951360.

The previous prime is 2125907761. The next prime is 2125907803. The reversal of 2125907766 is 6677095212.

It is a super-2 number, since 2×2125907766² = 9038967659078221512, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125907761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3473400 + ... + 3474011.

It is an arithmetic number, because the mean of its divisors is an integer number (203211801).

Almost surely, 2^2125907766 is an apocalyptic number.

2125907766 is an abundant number, since it is smaller than the sum of its proper divisors (2751175458).

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

2125907766 is a wasteful number, since it uses less digits than its factorization.

2125907766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6947436 (or 6947433 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 2125907766 is about 46107.5673398630. The cubic root of 2125907766 is about 1285.8238376598.

The spelling of 2125907766 in words is "two billion, one hundred twenty-five million, nine hundred seven thousand, seven hundred sixty-six".