25650749 has 4 divisors (see below), whose sum is σ = 26033664. Its totient is φ = 25267836.

The previous prime is 25650743. The next prime is 25650763. The reversal of 25650749 is 94705652.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25650749 is a prime.

It is a super-2 number, since 2×25650749² = 1315921848522002, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25650743) 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, 191357 + ... + 191490.

It is an arithmetic number, because the mean of its divisors is an integer number (6508416).

Almost surely, 2^25650749 is an apocalyptic number.

It is an amenable number.

25650749 is a deficient number, since it is larger than the sum of its proper divisors (382915).

25650749 is an equidigital number, since it uses as much as digits as its factorization.

25650749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382914.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 25650749 is about 5064.6568491853. The cubic root of 25650749 is about 294.9171422951.

The spelling of 25650749 in words is "twenty-five million, six hundred fifty thousand, seven hundred forty-nine".