20012055425 has 24 divisors (see below), whose sum is σ = 26963631360. Its totient is φ = 14677761600.

The previous prime is 20012055421. The next prime is 20012055443. The reversal of 20012055425 is 52455021002.

It is not a de Polignac number, because 20012055425 - 2² = 20012055421 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20012055394 and 20012055403.

It is not an unprimeable number, because it can be changed into a prime (20012055421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 664802 + ... + 694251.

It is an arithmetic number, because the mean of its divisors is an integer number (1123484640).

Almost surely, 2^20012055425 is an apocalyptic number.

20012055425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20012055425 is a deficient number, since it is larger than the sum of its proper divisors (6951575935).

20012055425 is a wasteful number, since it uses less digits than its factorization.

20012055425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359113 (or 1359108 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

Adding to 20012055425 its reverse (52455021002), we get a palindrome (72467076427).

The spelling of 20012055425 in words is "twenty billion, twelve million, fifty-five thousand, four hundred twenty-five".