25288340 has 48 divisors (see below), whose sum is σ = 66213504. Its totient is φ = 7881600.

The previous prime is 25288337. The next prime is 25288363. The reversal of 25288340 is 4388252.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25288297 and 25288306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6671 + ... + 9750.

It is an arithmetic number, because the mean of its divisors is an integer number (1379448).

Almost surely, 2^25288340 is an apocalyptic number.

25288340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25288340 is an abundant number, since it is smaller than the sum of its proper divisors (40925164).

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

25288340 is a wasteful number, since it uses less digits than its factorization.

25288340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16448 (or 16446 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 25288340 is about 5028.7513360674. The cubic root of 25288340 is about 293.5216278428.

The spelling of 25288340 in words is "twenty-five million, two hundred eighty-eight thousand, three hundred forty".