25049613 has 4 divisors (see below), whose sum is σ = 33399488. Its totient is φ = 16699740.

The previous prime is 25049611. The next prime is 25049621. The reversal of 25049613 is 31694052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25049613 - 2¹ = 25049611 is a prime.

It is a super-2 number, since 2×25049613² = 1254966222899538, which 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 (25049611) 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, 4174933 + ... + 4174938.

It is an arithmetic number, because the mean of its divisors is an integer number (8349872).

Almost surely, 2^25049613 is an apocalyptic number.

It is an amenable number.

25049613 is a deficient number, since it is larger than the sum of its proper divisors (8349875).

25049613 is an equidigital number, since it uses as much as digits as its factorization.

25049613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8349874.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 25049613 is about 5004.9588409896. The cubic root of 25049613 is about 292.5950717325.

The spelling of 25049613 in words is "twenty-five million, forty-nine thousand, six hundred thirteen".