25149013 has 4 divisors (see below), whose sum is σ = 25160128. Its totient is φ = 25137900.

The previous prime is 25148947. The next prime is 25149017. The reversal of 25149013 is 31094152.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25149013 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 (25149017) 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, 813 + ... + 7138.

It is an arithmetic number, because the mean of its divisors is an integer number (6290032).

Almost surely, 2^25149013 is an apocalyptic number.

It is an amenable number.

25149013 is a deficient number, since it is larger than the sum of its proper divisors (11115).

25149013 is an equidigital number, since it uses as much as digits as its factorization.

25149013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11114.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 25149013 is about 5014.8791610566. The cubic root of 25149013 is about 292.9815789030.

The spelling of 25149013 in words is "twenty-five million, one hundred forty-nine thousand, thirteen".