25440435480 has 64 divisors (see below), whose sum is σ = 76358187360. Its totient is φ = 6780837888.

The previous prime is 25440435473. The next prime is 25440435487. The reversal of 25440435480 is 8453404452.

It is an interprime number because it is at equal distance from previous prime (25440435473) and next prime (25440435487).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25440435487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203394 + ... + 303726.

Almost surely, 2^25440435480 is an apocalyptic number.

25440435480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25440435480 is an abundant number, since it is smaller than the sum of its proper divisors (50917751880).

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

25440435480 is a wasteful number, since it uses less digits than its factorization.

25440435480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102460 (or 102456 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 39.

The spelling of 25440435480 in words is "twenty-five billion, four hundred forty million, four hundred thirty-five thousand, four hundred eighty".