25440976 has 60 divisors (see below), whose sum is σ = 57441636. Its totient is φ = 10869760.

The previous prime is 25440973. The next prime is 25440979. The reversal of 25440976 is 67904452.

It is an interprime number because it is at equal distance from previous prime (25440973) and next prime (25440979).

It can be written as a sum of positive squares in 2 ways, for example, as 9759376 + 15681600 = 3124^2 + 3960^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25440973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32526 + ... + 33298.

Almost surely, 2^25440976 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 25440976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28720818).

25440976 is an abundant number, since it is smaller than the sum of its proper divisors (32000660).

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

25440976 is a wasteful number, since it uses less digits than its factorization.

25440976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 25440976 is about 5043.9048365329. The cubic root of 25440976 is about 294.1109920753.

The spelling of 25440976 in words is "twenty-five million, four hundred forty thousand, nine hundred seventy-six".