25228480785 has 16 divisors (see below), whose sum is σ = 40683411456. Its totient is φ = 13349242368.

The previous prime is 25228480769. The next prime is 25228480793. The reversal of 25228480785 is 58708482252.

It is a happy number.

It is not a de Polignac number, because 25228480785 - 2⁴ = 25228480769 is a prime.

It is a super-2 number, since 2×25228480785² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6619744 + ... + 6623553.

It is an arithmetic number, because the mean of its divisors is an integer number (2542713216).

Almost surely, 2^25228480785 is an apocalyptic number.

It is an amenable number.

25228480785 is a deficient number, since it is larger than the sum of its proper divisors (15454930671).

25228480785 is a wasteful number, since it uses less digits than its factorization.

25228480785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13243432.

The product of its (nonzero) digits is 2867200, while the sum is 51.

The spelling of 25228480785 in words is "twenty-five billion, two hundred twenty-eight million, four hundred eighty thousand, seven hundred eighty-five".