25075440 has 320 divisors, whose sum is σ = 99993600. Its totient is φ = 5723136.

The previous prime is 25075439. The next prime is 25075441. The reversal of 25075440 is 4457052.

It is an interprime number because it is at equal distance from previous prime (25075439) and next prime (25075441).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25075441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 533497 + ... + 533543.

It is an arithmetic number, because the mean of its divisors is an integer number (312480).

Almost surely, 2^25075440 is an apocalyptic number.

25075440 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 25075440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49996800).

25075440 is an abundant number, since it is smaller than the sum of its proper divisors (74918160).

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

25075440 is a wasteful number, since it uses less digits than its factorization.

25075440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 25075440 is about 5007.5383173771. The cubic root of 25075440 is about 292.6955956711.

The spelling of 25075440 in words is "twenty-five million, seventy-five thousand, four hundred forty".