25954985 has 16 divisors (see below), whose sum is σ = 36201600. Its totient is φ = 17494656.

The previous prime is 25954963. The next prime is 25954987. The reversal of 25954985 is 58945952.

It is a cyclic number.

It is not a de Polignac number, because 25954985 - 2¹² = 25950889 is a prime.

It is a super-2 number, since 2×25954985² = 1347322492700450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25954987) 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, 4220 + ... + 8349.

It is an arithmetic number, because the mean of its divisors is an integer number (2262600).

Almost surely, 2^25954985 is an apocalyptic number.

It is an amenable number.

25954985 is a deficient number, since it is larger than the sum of its proper divisors (10246615).

25954985 is a wasteful number, since it uses less digits than its factorization.

25954985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12640.

The product of its digits is 648000, while the sum is 47.

The square root of 25954985 is about 5094.6035174486. The cubic root of 25954985 is about 296.0785378704.

The spelling of 25954985 in words is "twenty-five million, nine hundred fifty-four thousand, nine hundred eighty-five".