25394649352 has 32 divisors (see below), whose sum is σ = 47751580800. Its totient is φ = 12660951744.

The previous prime is 25394649323. The next prime is 25394649359.

25394649352 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×25394649352² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25394649352.

It is not an unprimeable number, because it can be changed into a prime (25394649359) 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, 4494193 + ... + 4499839.

It is an arithmetic number, because the mean of its divisors is an integer number (1492236900).

Almost surely, 2^25394649352 is an apocalyptic number.

It is an amenable number.

25394649352 is a deficient number, since it is larger than the sum of its proper divisors (22356931448).

25394649352 is a wasteful number, since it uses less digits than its factorization.

25394649352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7165 (or 7161 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 52.

The spelling of 25394649352 in words is "twenty-five billion, three hundred ninety-four million, six hundred forty-nine thousand, three hundred fifty-two".