25325811 has 16 divisors (see below), whose sum is σ = 42880000. Its totient is φ = 14471784.

The previous prime is 25325779. The next prime is 25325813. The reversal of 25325811 is 11852352.

It is a happy number.

It is not a de Polignac number, because 25325811 - 2⁵ = 25325779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25325813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66811 + ... + 67188.

It is an arithmetic number, because the mean of its divisors is an integer number (2680000).

Almost surely, 2^25325811 is an apocalyptic number.

25325811 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25325811 is a deficient number, since it is larger than the sum of its proper divisors (17554189).

25325811 is a wasteful number, since it uses less digits than its factorization.

25325811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134015 (or 134009 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 25325811 is about 5032.4756333240. The cubic root of 25325811 is about 293.6665315285. Note that the first 3 decimals are identical.

The spelling of 25325811 in words is "twenty-five million, three hundred twenty-five thousand, eight hundred eleven".