25825401 has 36 divisors (see below), whose sum is σ = 43787172. Its totient is φ = 14624064.

The previous prime is 25825391. The next prime is 25825409. The reversal of 25825401 is 10452852.

It is a happy number.

25825401 is a `hidden beast` number, since 258 + 2 + 5 + 401 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10732176 + 15093225 = 3276^2 + 3885^2 .

It is not a de Polignac number, because 25825401 - 2⁵ = 25825369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25825409) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 69051 + ... + 69423.

Almost surely, 2^25825401 is an apocalyptic number.

25825401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25825401 is a deficient number, since it is larger than the sum of its proper divisors (17961771).

25825401 is a wasteful number, since it uses less digits than its factorization.

25825401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 25825401 is about 5081.8698330437. The cubic root of 25825401 is about 295.5849773214.

The spelling of 25825401 in words is "twenty-five million, eight hundred twenty-five thousand, four hundred one".