2125390566 has 32 divisors (see below), whose sum is σ = 4725439488. Its totient is φ = 632869920.

The previous prime is 2125390537. The next prime is 2125390567. The reversal of 2125390566 is 6650935212.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125390567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437076 + ... + 441911.

It is an arithmetic number, because the mean of its divisors is an integer number (147669984).

Almost surely, 2^2125390566 is an apocalyptic number.

2125390566 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2125390566 is an abundant number, since it is smaller than the sum of its proper divisors (2600048922).

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

2125390566 is a wasteful number, since it uses less digits than its factorization.

2125390566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879036.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 2125390566 is about 46101.9583748890. The cubic root of 2125390566 is about 1285.7195556151.

The spelling of 2125390566 in words is "two billion, one hundred twenty-five million, three hundred ninety thousand, five hundred sixty-six".