25511923 has 2 divisors, whose sum is σ = 25511924. Its totient is φ = 25511922.

The previous prime is 25511861. The next prime is 25511953. The reversal of 25511923 is 32911552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25511923 - 2²¹ = 23414771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25511891 and 25511900.

It is not a weakly prime, because it can be changed into another prime (25511953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12755961 + 12755962.

It is an arithmetic number, because the mean of its divisors is an integer number (12755962).

Almost surely, 2^25511923 is an apocalyptic number.

25511923 is a deficient number, since it is larger than the sum of its proper divisors (1).

25511923 is an equidigital number, since it uses as much as digits as its factorization.

25511923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 28.

The square root of 25511923 is about 5050.9328841314. The cubic root of 25511923 is about 294.3841331425.

The spelling of 25511923 in words is "twenty-five million, five hundred eleven thousand, nine hundred twenty-three".