2151454200025 has 18 divisors (see below), whose sum is σ = 2888804662890. Its totient is φ = 1588766175360.

The previous prime is 2151454199941. The next prime is 2151454200031. The reversal of 2151454200025 is 5200024541512.

It can be written as a sum of positive squares in 9 ways, for example, as 2016209724489 + 135244475536 = 1419933^2 + 367756^2 .

It is not a de Polignac number, because 2151454200025 - 2⁹ = 2151454199513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2151454200025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 254605740 + ... + 254614189.

Almost surely, 2^{2151454200025} is an apocalyptic number.

2151454200025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2151454200025 is a deficient number, since it is larger than the sum of its proper divisors (737350462865).

2151454200025 is a wasteful number, since it uses less digits than its factorization.

2151454200025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509219965 (or 509219947 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 2151454200025 its reverse (5200024541512), we get a palindrome (7351478741537).

The spelling of 2151454200025 in words is "two trillion, one hundred fifty-one billion, four hundred fifty-four million, two hundred thousand, twenty-five".