2154245525 has 24 divisors (see below), whose sum is σ = 2838550464. Its totient is φ = 1616198400.

The previous prime is 2154245497. The next prime is 2154245543. The reversal of 2154245525 is 5255424512.

It is not a de Polignac number, because 2154245525 - 2¹⁴ = 2154229141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111320 + ... + 129230.

It is an arithmetic number, because the mean of its divisors is an integer number (118272936).

Almost surely, 2^2154245525 is an apocalyptic number.

2154245525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2154245525 is a deficient number, since it is larger than the sum of its proper divisors (684304939).

2154245525 is a wasteful number, since it uses less digits than its factorization.

2154245525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18221 (or 18216 counting only the distinct ones).

The product of its digits is 80000, while the sum is 35.

The square root of 2154245525 is about 46413.8505728624. The cubic root of 2154245525 is about 1291.5118634227.

The spelling of 2154245525 in words is "two billion, one hundred fifty-four million, two hundred forty-five thousand, five hundred twenty-five".