25100041440 has 96 divisors (see below), whose sum is σ = 79588970496. Its totient is φ = 6648998400.

The previous prime is 25100041403. The next prime is 25100041441. The reversal of 25100041440 is 4414000152.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25100041441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100672 + ... + 245631.

It is an arithmetic number, because the mean of its divisors is an integer number (829051776).

Almost surely, 2^25100041440 is an apocalyptic number.

25100041440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25100041440 is an abundant number, since it is smaller than the sum of its proper divisors (54488929056).

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

25100041440 is a wasteful number, since it uses less digits than its factorization.

25100041440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346472 (or 346464 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 25100041440 its reverse (4414000152), we get a palindrome (29514041592).

The spelling of 25100041440 in words is "twenty-five billion, one hundred million, forty-one thousand, four hundred forty".