25449374852 has 48 divisors (see below), whose sum is σ = 49911531264. Its totient is φ = 11349509600.

The previous prime is 25449374843. The next prime is 25449374869. The reversal of 25449374852 is 25847394452.

It is a super-2 number, since 2×25449374852² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a junction number, because it is equal to n+sod(n) for n = 25449374794 and 25449374803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237077 + ... + 327267.

It is an arithmetic number, because the mean of its divisors is an integer number (1039823568).

Almost surely, 2^25449374852 is an apocalyptic number.

25449374852 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25449374852 is a deficient number, since it is larger than the sum of its proper divisors (24462156412).

25449374852 is a wasteful number, since it uses less digits than its factorization.

25449374852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90281 (or 90257 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 53.

The spelling of 25449374852 in words is "twenty-five billion, four hundred forty-nine million, three hundred seventy-four thousand, eight hundred fifty-two".