25163040 has 96 divisors (see below), whose sum is σ = 90599040. Its totient is φ = 5750784.

The previous prime is 25163029. The next prime is 25163057. The reversal of 25163040 is 4036152.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 25162998 and 25163016.

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, 385 + ... + 7104.

It is an arithmetic number, because the mean of its divisors is an integer number (943740).

Almost surely, 2^25163040 is an apocalyptic number.

25163040 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 25163040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45299520).

25163040 is an abundant number, since it is smaller than the sum of its proper divisors (65436000).

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

25163040 is a wasteful number, since it uses less digits than its factorization.

25163040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7514 (or 7506 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 25163040 is about 5016.2775042854. The cubic root of 25163040 is about 293.0360394735.

Adding to 25163040 its reverse (4036152), we get a palindrome (29199192).

The spelling of 25163040 in words is "twenty-five million, one hundred sixty-three thousand, forty".