2154953125 has 42 divisors (see below), whose sum is σ = 2929298442. Its totient is φ = 1575900000.

The previous prime is 2154953123. The next prime is 2154953147. The reversal of 2154953125 is 5213594512.

It can be written as a sum of positive squares in 7 ways, for example, as 2044577089 + 110376036 = 45217^2 + 10506^2 .

It is not a de Polignac number, because 2154953125 - 2¹ = 2154953123 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154953123) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 20921824 + ... + 20921926.

It is an arithmetic number, because the mean of its divisors is an integer number (69745201).

Almost surely, 2^2154953125 is an apocalyptic number.

2154953125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2154953125 is a deficient number, since it is larger than the sum of its proper divisors (774345317).

2154953125 is an frugal number, since it uses more digits than its factorization.

2154953125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 121 counting only the distinct ones).

The product of its digits is 54000, while the sum is 37.

The square root of 2154953125 is about 46421.4726715989. The cubic root of 2154953125 is about 1291.6532545723.

The spelling of 2154953125 in words is "two billion, one hundred fifty-four million, nine hundred fifty-three thousand, one hundred twenty-five".