25280680 has 32 divisors (see below), whose sum is σ = 59356800. Its totient is φ = 9672256.

The previous prime is 25280669. The next prime is 25280687. The reversal of 25280680 is 8608252.

It is a super-2 number, since 2×25280680² = 1278225562524800, which contains 22 as substring.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (25280687) 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, 12820 + ... + 14659.

It is an arithmetic number, because the mean of its divisors is an integer number (1854900).

Almost surely, 2^25280680 is an apocalyptic number.

25280680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25280680 is an abundant number, since it is smaller than the sum of its proper divisors (34076120).

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

25280680 is a wasteful number, since it uses less digits than its factorization.

25280680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27513 (or 27509 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 25280680 is about 5027.9896579050. The cubic root of 25280680 is about 293.4919883235.

The spelling of 25280680 in words is "twenty-five million, two hundred eighty thousand, six hundred eighty".