25504461040 has 20 divisors (see below), whose sum is σ = 59297872104. Its totient is φ = 10201784384.

The previous prime is 25504461023. The next prime is 25504461049. The reversal of 25504461040 is 4016440552.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 25504460993 and 25504461011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25504461049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159402802 + ... + 159402961.

Almost surely, 2^25504461040 is an apocalyptic number.

25504461040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25504461040 is an abundant number, since it is smaller than the sum of its proper divisors (33793411064).

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

25504461040 is a wasteful number, since it uses less digits than its factorization.

25504461040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318805776 (or 318805770 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 25504461040 in words is "twenty-five billion, five hundred four million, four hundred sixty-one thousand, forty".