25580769850 has 12 divisors (see below), whose sum is σ = 47580232014. Its totient is φ = 10232307920.

The previous prime is 25580769847. The next prime is 25580769899. The reversal of 25580769850 is 5896708552.

It can be written as a sum of positive squares in 3 ways, for example, as 23985646129 + 1595123721 = 154873^2 + 39939^2 .

It is a super-2 number, since 2×25580769850² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25580769791 and 25580769800.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 255807649 + ... + 255807748.

Almost surely, 2^25580769850 is an apocalyptic number.

25580769850 is a deficient number, since it is larger than the sum of its proper divisors (21999462164).

25580769850 is a wasteful number, since it uses less digits than its factorization.

25580769850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511615409 (or 511615404 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 55.

The spelling of 25580769850 in words is "twenty-five billion, five hundred eighty million, seven hundred sixty-nine thousand, eight hundred fifty".