25252001 has 4 divisors (see below), whose sum is σ = 25312404. Its totient is φ = 25191600.

The previous prime is 25251983. The next prime is 25252013. The reversal of 25252001 is 10025252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1437601 + 23814400 = 1199^2 + 4880^2 .

It is a cyclic number.

It is not a de Polignac number, because 25252001 - 2⁶ = 25251937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25252061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29570 + ... + 30411.

It is an arithmetic number, because the mean of its divisors is an integer number (6328101).

Almost surely, 2^25252001 is an apocalyptic number.

It is an amenable number.

25252001 is a deficient number, since it is larger than the sum of its proper divisors (60403).

25252001 is an equidigital number, since it uses as much as digits as its factorization.

25252001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60402.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 25252001 is about 5025.1369135577. The cubic root of 25252001 is about 293.3809649178.

Adding to 25252001 its reverse (10025252), we get a palindrome (35277253).

The spelling of 25252001 in words is "twenty-five million, two hundred fifty-two thousand, one".