25206376349 has 16 divisors (see below), whose sum is σ = 31437714816. Its totient is φ = 19634092800.

The previous prime is 25206376333. The next prime is 25206376381. The reversal of 25206376349 is 94367360252.

It is not a de Polignac number, because 25206376349 - 2⁴ = 25206376333 is a prime.

It is a super-2 number, since 2×25206376349² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25206376309) 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, 154889 + ... + 272769.

It is an arithmetic number, because the mean of its divisors is an integer number (1964857176).

Almost surely, 2^25206376349 is an apocalyptic number.

It is an amenable number.

25206376349 is a deficient number, since it is larger than the sum of its proper divisors (6231338467).

25206376349 is a wasteful number, since it uses less digits than its factorization.

25206376349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120676.

The product of its (nonzero) digits is 1632960, while the sum is 47.

The spelling of 25206376349 in words is "twenty-five billion, two hundred six million, three hundred seventy-six thousand, three hundred forty-nine".