25981675 has 12 divisors (see below), whose sum is σ = 32967880. Its totient is φ = 20301120.

The previous prime is 25981643. The next prime is 25981679. The reversal of 25981675 is 57618952.

It is not a de Polignac number, because 25981675 - 2⁵ = 25981643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (25981679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11010 + ... + 13159.

Almost surely, 2^25981675 is an apocalyptic number.

25981675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25981675 is a deficient number, since it is larger than the sum of its proper divisors (6986205).

25981675 is a wasteful number, since it uses less digits than its factorization.

25981675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24222 (or 24217 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The square root of 25981675 is about 5097.2222827732. Note that the first 4 decimals coincide. The cubic root of 25981675 is about 296.1799908156.

The spelling of 25981675 in words is "twenty-five million, nine hundred eighty-one thousand, six hundred seventy-five".