25168401 has 10 divisors (see below), whose sum is σ = 37597362. Its totient is φ = 16778880.

The previous prime is 25168391. The next prime is 25168411. The reversal of 25168401 is 10486152.

25168401 is a `hidden beast` number, since 251 + 6 + 8 + 401 = 666.

It is an interprime number because it is at equal distance from previous prime (25168391) and next prime (25168411).

It can be written as a sum of positive squares in only one way, i.e., 20657025 + 4511376 = 4545^2 + 2124^2 .

It is not a de Polignac number, because 25168401 - 2⁶ = 25168337 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (25168411) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 155280 + ... + 155441.

Almost surely, 2^25168401 is an apocalyptic number.

It is an amenable number.

25168401 is a deficient number, since it is larger than the sum of its proper divisors (12428961).

25168401 is an equidigital number, since it uses as much as digits as its factorization.

25168401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310733 (or 310724 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 25168401 is about 5016.8118362163. The cubic root of 25168401 is about 293.0568484941.

The spelling of 25168401 in words is "twenty-five million, one hundred sixty-eight thousand, four hundred one".