25406892 has 72 divisors (see below), whose sum is σ = 76639920. Its totient is φ = 7257600.

The previous prime is 25406867. The next prime is 25406897. The reversal of 25406892 is 29860452.

It is a happy number.

25406892 is nontrivially palindromic in base 5.

It is a super-2 number, since 2×25406892² = 1291020322199328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25406897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2892 + ... + 7692.

Almost surely, 2^25406892 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 25406892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38319960).

25406892 is an abundant number, since it is smaller than the sum of its proper divisors (51233028).

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

25406892 is a wasteful number, since it uses less digits than its factorization.

25406892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4828 (or 4813 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 25406892 is about 5040.5249726591. The cubic root of 25406892 is about 293.9795904199.

The spelling of 25406892 in words is "twenty-five million, four hundred six thousand, eight hundred ninety-two".