25000101 has 24 divisors (see below), whose sum is σ = 41705664. Its totient is φ = 14135040.

The previous prime is 25000069. The next prime is 25000109. The reversal of 25000101 is 10100052.

It is a happy number.

It is not a de Polignac number, because 25000101 - 2⁵ = 25000069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25000109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4066 + ... + 8156.

It is an arithmetic number, because the mean of its divisors is an integer number (1737736).

Almost surely, 2^25000101 is an apocalyptic number.

25000101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25000101 is a deficient number, since it is larger than the sum of its proper divisors (16705563).

25000101 is a wasteful number, since it uses less digits than its factorization.

25000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4201 (or 4198 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 25000101 is about 5000.0100999898. The cubic root of 25000101 is about 292.4021675885.

Adding to 25000101 its reverse (10100052), we get a palindrome (35100153).

The spelling of 25000101 in words is "twenty-five million, one hundred one", and thus it is an aban number.