25100614421 has 4 divisors (see below), whose sum is σ = 25230669612. Its totient is φ = 24970559232.

The previous prime is 25100614397. The next prime is 25100614423. The reversal of 25100614421 is 12441600152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12256925521 + 12843688900 = 110711^2 + 113330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25100614421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25100614423) 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 3 ways as a sum of consecutive naturals, for example, 65027306 + ... + 65027691.

It is an arithmetic number, because the mean of its divisors is an integer number (6307667403).

Almost surely, 2^25100614421 is an apocalyptic number.

It is an amenable number.

25100614421 is a deficient number, since it is larger than the sum of its proper divisors (130055191).

25100614421 is a wasteful number, since it uses less digits than its factorization.

25100614421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130055190.

The product of its (nonzero) digits is 1920, while the sum is 26.

The spelling of 25100614421 in words is "twenty-five billion, one hundred million, six hundred fourteen thousand, four hundred twenty-one".