25621295951 has 8 divisors (see below), whose sum is σ = 25674818400. Its totient is φ = 25567810528.

The previous prime is 25621295939. The next prime is 25621295963. The reversal of 25621295951 is 15959212652.

It is an interprime number because it is at equal distance from previous prime (25621295939) and next prime (25621295963).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25621295951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25621295896 and 25621295905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25621295911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1691825 + ... + 1706901.

It is an arithmetic number, because the mean of its divisors is an integer number (3209352300).

Almost surely, 2^25621295951 is an apocalyptic number.

25621295951 is a deficient number, since it is larger than the sum of its proper divisors (53522449).

25621295951 is a wasteful number, since it uses less digits than its factorization.

25621295951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18513.

The product of its digits is 486000, while the sum is 47.

The spelling of 25621295951 in words is "twenty-five billion, six hundred twenty-one million, two hundred ninety-five thousand, nine hundred fifty-one".