25670349 has 18 divisors (see below), whose sum is σ = 39138606. Its totient is φ = 16210800.

The previous prime is 25670347. The next prime is 25670353. The reversal of 25670349 is 94307652.

It can be written as a sum of positive squares in only one way, i.e., 23474025 + 2196324 = 4845^2 + 1482^2 .

It is not a de Polignac number, because 25670349 - 2¹ = 25670347 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25670347) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 702 + ... + 7199.

It is an arithmetic number, because the mean of its divisors is an integer number (2174367).

Almost surely, 2^25670349 is an apocalyptic number.

It is an amenable number.

25670349 is a deficient number, since it is larger than the sum of its proper divisors (13468257).

25670349 is a wasteful number, since it uses less digits than its factorization.

25670349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7945 (or 7923 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 25670349 is about 5066.5914577751. The cubic root of 25670349 is about 294.9922395737.

The spelling of 25670349 in words is "twenty-five million, six hundred seventy thousand, three hundred forty-nine".