25412240 has 80 divisors (see below), whose sum is σ = 70495488. Its totient is φ = 8329728.

The previous prime is 25412239. The next prime is 25412279. The reversal of 25412240 is 4221452.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11894 + ... + 13866.

Almost surely, 2^25412240 is an apocalyptic number.

25412240 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 25412240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35247744).

25412240 is an abundant number, since it is smaller than the sum of its proper divisors (45083248).

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

25412240 is a wasteful number, since it uses less digits than its factorization.

25412240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016 (or 2010 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 25412240 is about 5041.0554450432. The cubic root of 25412240 is about 294.0002159592. Note that the first 3 decimals are identical.

Adding to 25412240 its reverse (4221452), we get a palindrome (29633692).

It can be divided in two parts, 25412 and 240, that added together give a palindrome (25652).

The spelling of 25412240 in words is "twenty-five million, four hundred twelve thousand, two hundred forty".