25760540 has 24 divisors (see below), whose sum is σ = 58259040. Its totient is φ = 9511488.

The previous prime is 25760519. The next prime is 25760549. The reversal of 25760540 is 4506752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25760549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49280 + ... + 49799.

It is an arithmetic number, because the mean of its divisors is an integer number (2427460).

Almost surely, 2^25760540 is an apocalyptic number.

25760540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25760540 is an abundant number, since it is smaller than the sum of its proper divisors (32498500).

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

25760540 is a wasteful number, since it uses less digits than its factorization.

25760540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99101 (or 99099 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 25760540 is about 5075.4842133534. The cubic root of 25760540 is about 295.3373140501.

The spelling of 25760540 in words is "twenty-five million, seven hundred sixty thousand, five hundred forty".