20531054425 has 24 divisors (see below), whose sum is σ = 29805092352. Its totient is φ = 13735056000.

The previous prime is 20531054419. The next prime is 20531054461. The reversal of 20531054425 is 52445013502.

It is not a de Polignac number, because 20531054425 - 2³ = 20531054417 is a prime.

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, 1423561 + ... + 1437910.

It is an arithmetic number, because the mean of its divisors is an integer number (1241878848).

Almost surely, 2^20531054425 is an apocalyptic number.

20531054425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20531054425 is a deficient number, since it is larger than the sum of its proper divisors (9274037927).

20531054425 is a wasteful number, since it uses less digits than its factorization.

20531054425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861529 (or 2861524 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 20531054425 its reverse (52445013502), we get a palindrome (72976067927).

The spelling of 20531054425 in words is "twenty billion, five hundred thirty-one million, fifty-four thousand, four hundred twenty-five".