20125211025 has 48 divisors (see below), whose sum is σ = 34790094720. Its totient is φ = 10246156800.

The previous prime is 20125210981. The next prime is 20125211081. The reversal of 20125211025 is 52011252102.

It is not a de Polignac number, because 20125211025 - 2¹³ = 20125202833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20125210992 and 20125211010.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 866565 + ... + 889485.

It is an arithmetic number, because the mean of its divisors is an integer number (724793640).

Almost surely, 2^20125211025 is an apocalyptic number.

20125211025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20125211025 is a deficient number, since it is larger than the sum of its proper divisors (14664883695).

20125211025 is a wasteful number, since it uses less digits than its factorization.

20125211025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23466 (or 23461 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 20125211025 its reverse (52011252102), we get a palindrome (72136463127).

The spelling of 20125211025 in words is "twenty billion, one hundred twenty-five million, two hundred eleven thousand, twenty-five".