25634481 has 16 divisors (see below), whose sum is σ = 34837824. Its totient is φ = 16763904.

The previous prime is 25634449. The next prime is 25634491. The reversal of 25634481 is 18443652.

It is not a de Polignac number, because 25634481 - 2⁵ = 25634449 is a prime.

It is a super-2 number, since 2×25634481² = 1314253232278722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25634431) 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, 39546 + ... + 40188.

It is an arithmetic number, because the mean of its divisors is an integer number (2177364).

Almost surely, 2^25634481 is an apocalyptic number.

It is an amenable number.

25634481 is a deficient number, since it is larger than the sum of its proper divisors (9203343).

25634481 is a wasteful number, since it uses less digits than its factorization.

25634481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880.

The product of its digits is 23040, while the sum is 33.

The square root of 25634481 is about 5063.0505626549. The cubic root of 25634481 is about 294.8547824957.

The spelling of 25634481 in words is "twenty-five million, six hundred thirty-four thousand, four hundred eighty-one".