25084991 has 2 divisors, whose sum is σ = 25084992. Its totient is φ = 25084990.

The previous prime is 25084987. The next prime is 25085003. The reversal of 25084991 is 19948052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25084991 - 2² = 25084987 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25084901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12542495 + 12542496.

It is an arithmetic number, because the mean of its divisors is an integer number (12542496).

Almost surely, 2^25084991 is an apocalyptic number.

25084991 is a deficient number, since it is larger than the sum of its proper divisors (1).

25084991 is an equidigital number, since it uses as much as digits as its factorization.

25084991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 25084991 is about 5008.4918887825. The cubic root of 25084991 is about 292.7327526234.

The spelling of 25084991 in words is "twenty-five million, eighty-four thousand, nine hundred ninety-one".