25963390249 has 16 divisors (see below), whose sum is σ = 26509871808. Its totient is φ = 25423229952.

The previous prime is 25963390247. The next prime is 25963390283. The reversal of 25963390249 is 94209336952.

It is a cyclic number.

It is not a de Polignac number, because 25963390249 - 2¹ = 25963390247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25963390196 and 25963390205.

It is not an unprimeable number, because it can be changed into a prime (25963390247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14809957 + ... + 14811709.

It is an arithmetic number, because the mean of its divisors is an integer number (1656866988).

Almost surely, 2^25963390249 is an apocalyptic number.

It is an amenable number.

25963390249 is a deficient number, since it is larger than the sum of its proper divisors (546481559).

25963390249 is a wasteful number, since it uses less digits than its factorization.

25963390249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384.

The product of its (nonzero) digits is 3149280, while the sum is 52.

The spelling of 25963390249 in words is "twenty-five billion, nine hundred sixty-three million, three hundred ninety thousand, two hundred forty-nine".