25312349 has 4 divisors (see below), whose sum is σ = 25332060. Its totient is φ = 25292640.

The previous prime is 25312327. The next prime is 25312361. The reversal of 25312349 is 94321352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12040900 + 13271449 = 3470^2 + 3643^2 .

It is a cyclic number.

It is not a de Polignac number, because 25312349 - 2¹² = 25308253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25312379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7784 + ... + 10545.

It is an arithmetic number, because the mean of its divisors is an integer number (6333015).

Almost surely, 2^25312349 is an apocalyptic number.

It is an amenable number.

25312349 is a deficient number, since it is larger than the sum of its proper divisors (19711).

25312349 is a wasteful number, since it uses less digits than its factorization.

25312349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19710.

The product of its digits is 6480, while the sum is 29.

The square root of 25312349 is about 5031.1379428515. The cubic root of 25312349 is about 293.6144892396.

The spelling of 25312349 in words is "twenty-five million, three hundred twelve thousand, three hundred forty-nine".