25575240 has 64 divisors (see below), whose sum is σ = 77895360. Its totient is φ = 6716160.

The previous prime is 25575233. The next prime is 25575257. The reversal of 25575240 is 4257552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 25575198 and 25575207.

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, 6450 + ... + 9630.

It is an arithmetic number, because the mean of its divisors is an integer number (1217115).

Almost surely, 2^25575240 is an apocalyptic number.

25575240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25575240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38947680).

25575240 is an abundant number, since it is smaller than the sum of its proper divisors (52320120).

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

25575240 is a wasteful number, since it uses less digits than its factorization.

25575240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3262 (or 3258 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 25575240 is about 5057.1968520120. The cubic root of 25575240 is about 294.6274719292.

The spelling of 25575240 in words is "twenty-five million, five hundred seventy-five thousand, two hundred forty".