25431420322 has 48 divisors (see below), whose sum is σ = 48439922400. Its totient is φ = 9902088000.

The previous prime is 25431420293. The next prime is 25431420323. The reversal of 25431420322 is 22302413452.

It is not an unprimeable number, because it can be changed into a prime (25431420323) 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, 1934929 + ... + 1948027.

It is an arithmetic number, because the mean of its divisors is an integer number (1009165050).

Almost surely, 2^25431420322 is an apocalyptic number.

25431420322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25431420322 is a deficient number, since it is larger than the sum of its proper divisors (23008502078).

25431420322 is a wasteful number, since it uses less digits than its factorization.

25431420322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14927 (or 14920 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 25431420322 its reverse (22302413452), we get a palindrome (47733833774).

The spelling of 25431420322 in words is "twenty-five billion, four hundred thirty-one million, four hundred twenty thousand, three hundred twenty-two".