25690641 has 16 divisors (see below), whose sum is σ = 36939840. Its totient is φ = 15828480.

The previous prime is 25690633. The next prime is 25690649. The reversal of 25690641 is 14609652.

It is an interprime number because it is at equal distance from previous prime (25690633) and next prime (25690649).

It is not a de Polignac number, because 25690641 - 2³ = 25690633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25690649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3160 + ... + 7833.

It is an arithmetic number, because the mean of its divisors is an integer number (2308740).

Almost surely, 2^25690641 is an apocalyptic number.

It is an amenable number.

25690641 is a deficient number, since it is larger than the sum of its proper divisors (11249199).

25690641 is a wasteful number, since it uses less digits than its factorization.

25690641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11056.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 25690641 is about 5068.5935919148. The cubic root of 25690641 is about 295.0699479828.

The spelling of 25690641 in words is "twenty-five million, six hundred ninety thousand, six hundred forty-one".