25706481 has 8 divisors (see below), whose sum is σ = 34384704. Its totient is φ = 17082960.

The previous prime is 25706423. The next prime is 25706489. The reversal of 25706481 is 18460752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25706481 - 2⁷ = 25706353 is a prime.

It is a super-2 number, since 2×25706481² = 1321646330806722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25706489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12565 + ... + 14466.

It is an arithmetic number, because the mean of its divisors is an integer number (4298088).

Almost surely, 2^25706481 is an apocalyptic number.

It is an amenable number.

25706481 is a deficient number, since it is larger than the sum of its proper divisors (8678223).

25706481 is a wasteful number, since it uses less digits than its factorization.

25706481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27351.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 25706481 is about 5070.1559147624. The cubic root of 25706481 is about 295.1305789821.

The spelling of 25706481 in words is "twenty-five million, seven hundred six thousand, four hundred eighty-one".