25234354340 has 96 divisors (see below), whose sum is σ = 58145278464. Its totient is φ = 9142248960.

The previous prime is 25234354331. The next prime is 25234354391. The reversal of 25234354340 is 4345343252.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25234354340.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7404917 + ... + 7408323.

It is an arithmetic number, because the mean of its divisors is an integer number (605679984).

Almost surely, 2^25234354340 is an apocalyptic number.

25234354340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25234354340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29072639232).

25234354340 is an abundant number, since it is smaller than the sum of its proper divisors (32910924124).

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

25234354340 is a wasteful number, since it uses less digits than its factorization.

25234354340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957 (or 3955 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 35.

Adding to 25234354340 its reverse (4345343252), we get a palindrome (29579697592).

The spelling of 25234354340 in words is "twenty-five billion, two hundred thirty-four million, three hundred fifty-four thousand, three hundred forty".