2551400125 has 32 divisors (see below), whose sum is σ = 3276599040. Its totient is φ = 1982635200.

The previous prime is 2551400119. The next prime is 2551400129. The reversal of 2551400125 is 5210041552.

It is not a de Polignac number, because 2551400125 - 2¹⁷ = 2551269053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 2551400125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551400129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 680506 + ... + 684244.

It is an arithmetic number, because the mean of its divisors is an integer number (102393720).

Almost surely, 2^2551400125 is an apocalyptic number.

2551400125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2551400125 is a deficient number, since it is larger than the sum of its proper divisors (725198915).

2551400125 is a wasteful number, since it uses less digits than its factorization.

2551400125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910 (or 3900 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 2551400125 is about 50511.3860926425. The cubic root of 2551400125 is about 1366.4472076391.

Adding to 2551400125 its reverse (5210041552), we get a palindrome (7761441677).

The spelling of 2551400125 in words is "two billion, five hundred fifty-one million, four hundred thousand, one hundred twenty-five".