25321201420 has 12 divisors (see below), whose sum is σ = 53174523024. Its totient is φ = 10128480560.

The previous prime is 25321201417. The next prime is 25321201441. The reversal of 25321201420 is 2410212352.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25321201391 and 25321201400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633030016 + ... + 633030055.

It is an arithmetic number, because the mean of its divisors is an integer number (4431210252).

Almost surely, 2^25321201420 is an apocalyptic number.

25321201420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25321201420 is an abundant number, since it is smaller than the sum of its proper divisors (27853321604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25321201420 is a wasteful number, since it uses less digits than its factorization.

25321201420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266060080 (or 1266060078 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 25321201420 its reverse (2410212352), we get a palindrome (27731413772).

The spelling of 25321201420 in words is "twenty-five billion, three hundred twenty-one million, two hundred one thousand, four hundred twenty".