25460240 has 40 divisors (see below), whose sum is σ = 63751128. Its totient is φ = 9400320.

The previous prime is 25460233. The next prime is 25460249. The reversal of 25460240 is 4206452.

It can be written as a sum of positive squares in 4 ways, for example, as 1175056 + 24285184 = 1084^2 + 4928^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (25460249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11201 + ... + 13280.

Almost surely, 2^25460240 is an apocalyptic number.

25460240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25460240 is an abundant number, since it is smaller than the sum of its proper divisors (38290888).

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

25460240 is a wasteful number, since it uses less digits than its factorization.

25460240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24507 (or 24501 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 25460240 is about 5045.8141067622. The cubic root of 25460240 is about 294.1852073191.

Adding to 25460240 its reverse (4206452), we get a palindrome (29666692).

The spelling of 25460240 in words is "twenty-five million, four hundred sixty thousand, two hundred forty".