25004858149 has 16 divisors (see below), whose sum is σ = 26375272560. Its totient is φ = 23674083840.

The previous prime is 25004858143. The next prime is 25004858159. The reversal of 25004858149 is 94185840052.

It can be written as a sum of positive squares in 8 ways, for example, as 5041994049 + 19962864100 = 71007^2 + 141290^2 .

It is a cyclic number.

It is not a de Polignac number, because 25004858149 - 2⁵ = 25004858117 is a prime.

It is a super-2 number, since 2×25004858149² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25004858099 and 25004858108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25004858143) 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, 568927 + ... + 611299.

It is an arithmetic number, because the mean of its divisors is an integer number (1648454535).

Almost surely, 2^25004858149 is an apocalyptic number.

It is an amenable number.

25004858149 is a deficient number, since it is larger than the sum of its proper divisors (1370414411).

25004858149 is a wasteful number, since it uses less digits than its factorization.

25004858149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42840.

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 25004858149 in words is "twenty-five billion, four million, eight hundred fifty-eight thousand, one hundred forty-nine".