25354030540 has 24 divisors (see below), whose sum is σ = 56045752560. Its totient is φ = 9607843008.

The previous prime is 25354030523. The next prime is 25354030561. The reversal of 25354030540 is 4503045352.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33360187 + ... + 33360946.

It is an arithmetic number, because the mean of its divisors is an integer number (2335239690).

Almost surely, 2^25354030540 is an apocalyptic number.

25354030540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25354030540 is an abundant number, since it is smaller than the sum of its proper divisors (30691722020).

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

25354030540 is a wasteful number, since it uses less digits than its factorization.

25354030540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66721161 (or 66721159 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 31.

Adding to 25354030540 its reverse (4503045352), we get a palindrome (29857075892).

The spelling of 25354030540 in words is "twenty-five billion, three hundred fifty-four million, thirty thousand, five hundred forty".