25101601 has 4 divisors (see below), whose sum is σ = 28687552. Its totient is φ = 21515652.

The previous prime is 25101589. The next prime is 25101611. The reversal of 25101601 is 10610152.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25101601 - 2⁵ = 25101569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25101611) 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, 1792965 + ... + 1792978.

It is an arithmetic number, because the mean of its divisors is an integer number (7171888).

Almost surely, 2^25101601 is an apocalyptic number.

It is an amenable number.

25101601 is a deficient number, since it is larger than the sum of its proper divisors (3585951).

25101601 is an equidigital number, since it uses as much as digits as its factorization.

25101601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585950.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 25101601 is about 5010.1497981597. The cubic root of 25101601 is about 292.7973492611.

Adding to 25101601 its reverse (10610152), we get a palindrome (35711753).

The spelling of 25101601 in words is "twenty-five million, one hundred one thousand, six hundred one".