25240481 has 4 divisors (see below), whose sum is σ = 28846272. Its totient is φ = 21634692.

The previous prime is 25240447. The next prime is 25240483. The reversal of 25240481 is 18404252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25240481 is a prime.

It is a super-2 number, since 2×25240481² = 1274163762222722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25240481.

It is not an unprimeable number, because it can be changed into a prime (25240483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1802885 + ... + 1802898.

It is an arithmetic number, because the mean of its divisors is an integer number (7211568).

Almost surely, 2^25240481 is an apocalyptic number.

It is an amenable number.

25240481 is a deficient number, since it is larger than the sum of its proper divisors (3605791).

25240481 is an equidigital number, since it uses as much as digits as its factorization.

25240481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3605790.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 25240481 is about 5023.9905453733. The cubic root of 25240481 is about 293.3363445226.

The spelling of 25240481 in words is "twenty-five million, two hundred forty thousand, four hundred eighty-one".