25493652650 has 12 divisors (see below), whose sum is σ = 47418194022. Its totient is φ = 10197461040.

The previous prime is 25493652641. The next prime is 25493652671. The reversal of 25493652650 is 5625639452.

It can be written as a sum of positive squares in 3 ways, for example, as 23467482481 + 2026170169 = 153191^2 + 45013^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25493652595 and 25493652604.

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, 254936477 + ... + 254936576.

Almost surely, 2^25493652650 is an apocalyptic number.

25493652650 is a deficient number, since it is larger than the sum of its proper divisors (21924541372).

25493652650 is a wasteful number, since it uses less digits than its factorization.

25493652650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509873065 (or 509873060 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 25493652650 in words is "twenty-five billion, four hundred ninety-three million, six hundred fifty-two thousand, six hundred fifty".