25160040 has 96 divisors (see below), whose sum is σ = 83566080. Its totient is φ = 6562176.

The previous prime is 25160029. The next prime is 25160071. The reversal of 25160040 is 4006152.

It is a happy number.

25160040 is a `hidden beast` number, since 25 + 1 + 600 + 40 = 666.

It is a super-2 number, since 2×25160040² = 1266055225603200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 25159995 and 25160022.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16177 + ... + 17663.

It is an arithmetic number, because the mean of its divisors is an integer number (870480).

Almost surely, 2^25160040 is an apocalyptic number.

25160040 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 25160040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41783040).

25160040 is an abundant number, since it is smaller than the sum of its proper divisors (58406040).

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

25160040 is a wasteful number, since it uses less digits than its factorization.

25160040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551 (or 1544 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 25160040 is about 5015.9784688533. The cubic root of 25160040 is about 293.0243935163.

Adding to 25160040 its reverse (4006152), we get a palindrome (29166192).

The spelling of 25160040 in words is "twenty-five million, one hundred sixty thousand, forty".