25410420551 has 4 divisors (see below), whose sum is σ = 26097188712. Its totient is φ = 24723652392.

The previous prime is 25410420533. The next prime is 25410420589. The reversal of 25410420551 is 15502401452.

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

It is a cyclic number.

It is not a de Polignac number, because 25410420551 - 2²² = 25406226247 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 (25410420151) 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, 343384025 + ... + 343384098.

It is an arithmetic number, because the mean of its divisors is an integer number (6524297178).

Almost surely, 2^25410420551 is an apocalyptic number.

25410420551 is a deficient number, since it is larger than the sum of its proper divisors (686768161).

25410420551 is an equidigital number, since it uses as much as digits as its factorization.

25410420551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686768160.

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 25410420551 in words is "twenty-five billion, four hundred ten million, four hundred twenty thousand, five hundred fifty-one".