20154324125 has 16 divisors (see below), whose sum is σ = 27087413808. Its totient is φ = 14883192000.

The previous prime is 20154324079. The next prime is 20154324139. The reversal of 20154324125 is 52142345102.

It can be written as a sum of positive squares in 8 ways, for example, as 8321453284 + 11832870841 = 91222^2 + 108779^2 .

It is not a de Polignac number, because 20154324125 - 2²⁴ = 20137546909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6199706 + ... + 6202955.

It is an arithmetic number, because the mean of its divisors is an integer number (1692963363).

Almost surely, 2^20154324125 is an apocalyptic number.

20154324125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20154324125 is a deficient number, since it is larger than the sum of its proper divisors (6933089683).

20154324125 is a wasteful number, since it uses less digits than its factorization.

20154324125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12402689 (or 12402679 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 20154324125 its reverse (52142345102), we get a palindrome (72296669227).

The spelling of 20154324125 in words is "twenty billion, one hundred fifty-four million, three hundred twenty-four thousand, one hundred twenty-five".