25120145255121 has 96 divisors (see below), whose sum is σ = 44064031415040. Its totient is φ = 13482820044288.

The previous prime is 25120145255041. The next prime is 25120145255167. The reversal of 25120145255121 is 12155254102152.

25120145255121 is a `hidden beast` number, since 2 + 5 + 1 + 2 + 0 + 1 + 4 + 525 + 5 + 121 = 666.

It is not a de Polignac number, because 25120145255121 - 2⁹ = 25120145254609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25120145255171) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 534481795 + ... + 534528791.

It is an arithmetic number, because the mean of its divisors is an integer number (459000327240).

Almost surely, 2^{25120145255121} is an apocalyptic number.

25120145255121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25120145255121 is a deficient number, since it is larger than the sum of its proper divisors (18943886159919).

25120145255121 is a wasteful number, since it uses less digits than its factorization.

25120145255121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54983 (or 54980 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 36.

Adding to 25120145255121 its reverse (12155254102152), we get a palindrome (37275399357273).

The spelling of 25120145255121 in words is "twenty-five trillion, one hundred twenty billion, one hundred forty-five million, two hundred fifty-five thousand, one hundred twenty-one".