25040101 has 4 divisors (see below), whose sum is σ = 25050304. Its totient is φ = 25029900.

The previous prime is 25040051. The next prime is 25040107. The reversal of 25040101 is 10104052.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25040101 - 2²¹ = 22942949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25040107) 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, 1066 + ... + 7156.

It is an arithmetic number, because the mean of its divisors is an integer number (6262576).

Almost surely, 2^25040101 is an apocalyptic number.

It is an amenable number.

25040101 is a deficient number, since it is larger than the sum of its proper divisors (10203).

25040101 is an equidigital number, since it uses as much as digits as its factorization.

25040101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 25040101 is about 5004.0084931982. The cubic root of 25040101 is about 292.5580316835.

Adding to 25040101 its reverse (10104052), we get a palindrome (35144153).

The spelling of 25040101 in words is "twenty-five million, forty thousand, one hundred one".