25545420455 has 8 divisors (see below), whose sum is σ = 30958015104. Its totient is φ = 20233996000.

The previous prime is 25545420431. The next prime is 25545420499. The reversal of 25545420455 is 55402454552.

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

It is not a de Polignac number, because 25545420455 - 2³⁰ = 24471678631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25291991 + ... + 25293000.

It is an arithmetic number, because the mean of its divisors is an integer number (3869751888).

Almost surely, 2^25545420455 is an apocalyptic number.

25545420455 is a deficient number, since it is larger than the sum of its proper divisors (5412594649).

25545420455 is a wasteful number, since it uses less digits than its factorization.

25545420455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50585097.

The product of its (nonzero) digits is 800000, while the sum is 41.

The spelling of 25545420455 in words is "twenty-five billion, five hundred forty-five million, four hundred twenty thousand, four hundred fifty-five".