25407065380 has 24 divisors (see below), whose sum is σ = 53362222200. Its totient is φ = 10161419520.

The previous prime is 25407065347. The next prime is 25407065381. The reversal of 25407065380 is 8356070452.

It can be written as a sum of positive squares in 4 ways, for example, as 9915778084 + 15491287296 = 99578^2 + 124464^2 .

It is not an unprimeable number, because it can be changed into a prime (25407065381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66840 + ... + 235120.

It is an arithmetic number, because the mean of its divisors is an integer number (2223425925).

Almost surely, 2^25407065380 is an apocalyptic number.

25407065380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25407065380 is an abundant number, since it is smaller than the sum of its proper divisors (27955156820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25407065380 is a wasteful number, since it uses less digits than its factorization.

25407065380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175839 (or 175837 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 25407065380 in words is "twenty-five billion, four hundred seven million, sixty-five thousand, three hundred eighty".