25123001 has 2 divisors, whose sum is σ = 25123002. Its totient is φ = 25123000.

The previous prime is 25122971. The next prime is 25123079. The reversal of 25123001 is 10032152.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21864976 + 3258025 = 4676^2 + 1805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25123001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25123081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12561500 + 12561501.

It is an arithmetic number, because the mean of its divisors is an integer number (12561501).

Almost surely, 2^25123001 is an apocalyptic number.

It is an amenable number.

25123001 is a deficient number, since it is larger than the sum of its proper divisors (1).

25123001 is an equidigital number, since it uses as much as digits as its factorization.

25123001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 25123001 is about 5012.2850078582. The cubic root of 25123001 is about 292.8805323151.

Adding to 25123001 its reverse (10032152), we get a palindrome (35155153).

The spelling of 25123001 in words is "twenty-five million, one hundred twenty-three thousand, one".