2125251464 has 64 divisors (see below), whose sum is σ = 4829932800. Its totient is φ = 855834624.

The previous prime is 2125251439. The next prime is 2125251467. The reversal of 2125251464 is 4641525212.

It is a self number, because there is not a number n which added to its sum of digits gives 2125251464.

It is not an unprimeable number, because it can be changed into a prime (2125251467) 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, 730637 + ... + 733539.

It is an arithmetic number, because the mean of its divisors is an integer number (75467700).

Almost surely, 2^2125251464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2125251464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2414966400).

2125251464 is an abundant number, since it is smaller than the sum of its proper divisors (2704681336).

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

2125251464 is a wasteful number, since it uses less digits than its factorization.

2125251464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3702 (or 3698 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The square root of 2125251464 is about 46100.4497158108. The cubic root of 2125251464 is about 1285.6915058586.

Adding to 2125251464 its reverse (4641525212), we get a palindrome (6766776676).

The spelling of 2125251464 in words is "two billion, one hundred twenty-five million, two hundred fifty-one thousand, four hundred sixty-four".