25540257032 has 16 divisors (see below), whose sum is σ = 48362121900. Its totient is φ = 12643691200.

The previous prime is 25540257023. The next prime is 25540257073. The reversal of 25540257032 is 23075204552.

It can be written as a sum of positive squares in 2 ways, for example, as 25219345636 + 320911396 = 158806^2 + 17914^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25540256983 and 25540257001.

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, 15803807 + ... + 15805422.

Almost surely, 2^25540257032 is an apocalyptic number.

It is an amenable number.

25540257032 is a deficient number, since it is larger than the sum of its proper divisors (22821864868).

25540257032 is a wasteful number, since it uses less digits than its factorization.

25540257032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31609336 (or 31609332 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 35.

The spelling of 25540257032 in words is "twenty-five billion, five hundred forty million, two hundred fifty-seven thousand, thirty-two".