25151554555 has 4 divisors (see below), whose sum is σ = 30181865472. Its totient is φ = 20121243640.

The previous prime is 25151554531. The next prime is 25151554567. The reversal of 25151554555 is 55545515152.

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

It is not a de Polignac number, because 25151554555 - 2¹¹ = 25151552507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2515155451 + ... + 2515155460.

It is an arithmetic number, because the mean of its divisors is an integer number (7545466368).

Almost surely, 2^25151554555 is an apocalyptic number.

25151554555 is a deficient number, since it is larger than the sum of its proper divisors (5030310917).

25151554555 is an equidigital number, since it uses as much as digits as its factorization.

25151554555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030310916.

The product of its digits is 625000, while the sum is 43.

The spelling of 25151554555 in words is "twenty-five billion, one hundred fifty-one million, five hundred fifty-four thousand, five hundred fifty-five".