25210416 has 160 divisors (see below), whose sum is σ = 85708800. Its totient is φ = 6186240.

The previous prime is 25210403. The next prime is 25210417. The reversal of 25210416 is 61401252.

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 = 25210392 and 25210401.

It is not an unprimeable number, because it can be changed into a prime (25210417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70045 + ... + 70403.

It is an arithmetic number, because the mean of its divisors is an integer number (535680).

Almost surely, 2^25210416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25210416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42854400).

25210416 is an abundant number, since it is smaller than the sum of its proper divisors (60498384).

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

25210416 is a wasteful number, since it uses less digits than its factorization.

25210416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 25210416 is about 5020.9975104555. The cubic root of 25210416 is about 293.2198298236.

Adding to 25210416 its reverse (61401252), we get a palindrome (86611668).

The spelling of 25210416 in words is "twenty-five million, two hundred ten thousand, four hundred sixteen".