25498091 has 2 divisors, whose sum is σ = 25498092. Its totient is φ = 25498090.

The previous prime is 25498087. The next prime is 25498093. The reversal of 25498091 is 19089452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25498091 - 2² = 25498087 is a prime.

Together with 25498093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25498093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12749045 + 12749046.

It is an arithmetic number, because the mean of its divisors is an integer number (12749046).

Almost surely, 2^25498091 is an apocalyptic number.

25498091 is a deficient number, since it is larger than the sum of its proper divisors (1).

25498091 is an equidigital number, since it uses as much as digits as its factorization.

25498091 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 25498091 is about 5049.5634464773. The cubic root of 25498091 is about 294.3309206707.

The spelling of 25498091 in words is "twenty-five million, four hundred ninety-eight thousand, ninety-one".