25054891 has 2 divisors, whose sum is σ = 25054892. Its totient is φ = 25054890.

The previous prime is 25054871. The next prime is 25054919. The reversal of 25054891 is 19845052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25054891 - 2⁵ = 25054859 is a prime.

It is not a weakly prime, because it can be changed into another prime (25054801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12527445 + 12527446.

It is an arithmetic number, because the mean of its divisors is an integer number (12527446).

Almost surely, 2^25054891 is an apocalyptic number.

25054891 is a deficient number, since it is larger than the sum of its proper divisors (1).

25054891 is an equidigital number, since it uses as much as digits as its factorization.

25054891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 25054891 is about 5005.4860902813. The cubic root of 25054891 is about 292.6156203978.

It can be divided in two parts, 2505 and 4891, that added together give a square (7396 = 86²).

The spelling of 25054891 in words is "twenty-five million, fifty-four thousand, eight hundred ninety-one".