25078305553 has 16 divisors (see below), whose sum is σ = 30938330880. Its totient is φ = 19852088256.

The previous prime is 25078305547. The next prime is 25078305589. The reversal of 25078305553 is 35550387052.

It is not a de Polignac number, because 25078305553 - 2¹⁷ = 25078174481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25078305853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2680950 + ... + 2690287.

It is an arithmetic number, because the mean of its divisors is an integer number (1933645680).

Almost surely, 2^25078305553 is an apocalyptic number.

25078305553 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25078305553 is a deficient number, since it is larger than the sum of its proper divisors (5860025327).

25078305553 is a wasteful number, since it uses less digits than its factorization.

25078305553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5371296.

The product of its (nonzero) digits is 630000, while the sum is 43.

The spelling of 25078305553 in words is "twenty-five billion, seventy-eight million, three hundred five thousand, five hundred fifty-three".