25873491 has 8 divisors (see below), whose sum is σ = 39426304. Its totient is φ = 14784840.

The previous prime is 25873451. The next prime is 25873493. The reversal of 25873491 is 19437852.

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

It is not a de Polignac number, because 25873491 - 2⁶ = 25873427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25873493) 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, 616015 + ... + 616056.

It is an arithmetic number, because the mean of its divisors is an integer number (4928288).

Almost surely, 2^25873491 is an apocalyptic number.

25873491 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25873491 is a deficient number, since it is larger than the sum of its proper divisors (13552813).

25873491 is a wasteful number, since it uses less digits than its factorization.

25873491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232081.

The product of its digits is 60480, while the sum is 39.

The square root of 25873491 is about 5086.5991585734. The cubic root of 25873491 is about 295.7683351394.

The spelling of 25873491 in words is "twenty-five million, eight hundred seventy-three thousand, four hundred ninety-one".