25100061 has 32 divisors (see below), whose sum is σ = 40286208. Its totient is φ = 13590720.

The previous prime is 25100059. The next prime is 25100087. The reversal of 25100061 is 16000152.

It is not a de Polignac number, because 25100061 - 2¹ = 25100059 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25100061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25100161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75666 + ... + 75996.

It is an arithmetic number, because the mean of its divisors is an integer number (1258944).

Almost surely, 2^25100061 is an apocalyptic number.

25100061 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25100061 is a deficient number, since it is larger than the sum of its proper divisors (15186147).

25100061 is a wasteful number, since it uses less digits than its factorization.

25100061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 25100061 is about 5009.9961077829. The cubic root of 25100061 is about 292.7913613676.

Subtracting from 25100061 its reverse (16000152), we obtain a palindrome (9099909).

The spelling of 25100061 in words is "twenty-five million, one hundred thousand, sixty-one".