25276949 has 4 divisors (see below), whose sum is σ = 25307436. Its totient is φ = 25246464.

The previous prime is 25276913. The next prime is 25276961. The reversal of 25276949 is 94967252.

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 14668900 + 10608049 = 3830^2 + 3257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25276949 is a prime.

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

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25276969) 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, 13964 + ... + 15669.

It is an arithmetic number, because the mean of its divisors is an integer number (6326859).

Almost surely, 2^25276949 is an apocalyptic number.

It is an amenable number.

25276949 is a deficient number, since it is larger than the sum of its proper divisors (30487).

25276949 is an equidigital number, since it uses as much as digits as its factorization.

25276949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30486.

The product of its digits is 272160, while the sum is 44.

The square root of 25276949 is about 5027.6186211764. The cubic root of 25276949 is about 293.4775494650.

The spelling of 25276949 in words is "twenty-five million, two hundred seventy-six thousand, nine hundred forty-nine".