2125400451 has 8 divisors (see below), whose sum is σ = 2835823440. Its totient is φ = 1415955552.

The previous prime is 2125400447. The next prime is 2125400479. The reversal of 2125400451 is 1540045212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2125400451 - 2² = 2125400447 is a prime.

It is a super-2 number, since 2×2125400451² = 9034654154222006802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2125400051) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 239436 + ... + 248153.

It is an arithmetic number, because the mean of its divisors is an integer number (354477930).

Almost surely, 2^2125400451 is an apocalyptic number.

2125400451 is a deficient number, since it is larger than the sum of its proper divisors (710422989).

2125400451 is a wasteful number, since it uses less digits than its factorization.

2125400451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489045.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2125400451 is about 46102.0655827914. The cubic root of 2125400451 is about 1285.7215488673.

Adding to 2125400451 its reverse (1540045212), we get a palindrome (3665445663).

The spelling of 2125400451 in words is "two billion, one hundred twenty-five million, four hundred thousand, four hundred fifty-one".