25436480 has 56 divisors (see below), whose sum is σ = 62682120. Its totient is φ = 9820160.

The previous prime is 25436479. The next prime is 25436491. The reversal of 25436480 is 8463452.

It can be written as a sum of positive squares in 4 ways, for example, as 1308736 + 24127744 = 1144^2 + 4912^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7910 + ... + 10650.

Almost surely, 2^25436480 is an apocalyptic number.

25436480 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 25436480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31341060).

25436480 is an abundant number, since it is smaller than the sum of its proper divisors (37245640).

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

25436480 is a wasteful number, since it uses less digits than its factorization.

25436480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787 (or 2777 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 25436480 is about 5043.4591303985. The cubic root of 25436480 is about 294.0936656839.

The spelling of 25436480 in words is "twenty-five million, four hundred thirty-six thousand, four hundred eighty".