25047641 has 4 divisors (see below), whose sum is σ = 25520292. Its totient is φ = 24574992.

The previous prime is 25047611. The next prime is 25047653. The reversal of 25047641 is 14674052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20967241 + 4080400 = 4579^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 25047641 - 2⁶ = 25047577 is a prime.

It is a super-4 number, since 4×25047641⁴ (a number of 31 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25047601) 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, 236246 + ... + 236351.

It is an arithmetic number, because the mean of its divisors is an integer number (6380073).

Almost surely, 2^25047641 is an apocalyptic number.

It is an amenable number.

25047641 is a deficient number, since it is larger than the sum of its proper divisors (472651).

25047641 is an equidigital number, since it uses as much as digits as its factorization.

25047641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472650.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 25047641 is about 5004.7618324951. The cubic root of 25047641 is about 292.5873934685.

The spelling of 25047641 in words is "twenty-five million, forty-seven thousand, six hundred forty-one".