2154354525 has 18 divisors (see below), whose sum is σ = 3858688730. Its totient is φ = 1148988960.

The previous prime is 2154354509. The next prime is 2154354583. The reversal of 2154354525 is 5254534512.

2154354525 is a `hidden beast` number, since 215 + 435 + 4 + 5 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 314459289 + 1839895236 = 17733^2 + 42894^2 .

It is not a de Polignac number, because 2154354525 - 2⁴ = 2154354509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2154354525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4787230 + ... + 4787679.

Almost surely, 2^2154354525 is an apocalyptic number.

2154354525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2154354525 is a deficient number, since it is larger than the sum of its proper divisors (1704334205).

2154354525 is a wasteful number, since it uses less digits than its factorization.

2154354525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9574925 (or 9574917 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 2154354525 is about 46415.0247764665. The cubic root of 2154354525 is about 1291.5336455915.

The spelling of 2154354525 in words is "two billion, one hundred fifty-four million, three hundred fifty-four thousand, five hundred twenty-five".