25164001 has 6 divisors (see below), whose sum is σ = 26306210. Its totient is φ = 24069408.

The previous prime is 25163993. The next prime is 25164011. The reversal of 25164001 is 10046152.

It can be written as a sum of positive squares in only one way, i.e., 21160000 + 4004001 = 4600^2 + 2001^2 .

It is not a de Polignac number, because 25164001 - 2³ = 25163993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25164001.

It is not an unprimeable number, because it can be changed into a prime (25164011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23256 + ... + 24313.

Almost surely, 2^25164001 is an apocalyptic number.

It is an amenable number.

25164001 is a deficient number, since it is larger than the sum of its proper divisors (1142209).

25164001 is an equidigital number, since it uses as much as digits as its factorization.

25164001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47615 (or 47592 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 25164001 is about 5016.3732915324. The cubic root of 25164001 is about 293.0397698660.

The spelling of 25164001 in words is "twenty-five million, one hundred sixty-four thousand, one".