25047797 has 4 divisors (see below), whose sum is σ = 25058880. Its totient is φ = 25036716.

The previous prime is 25047787. The next prime is 25047811. The reversal of 25047797 is 79774052.

25047797 is nontrivially palindromic in base 4.

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 not a de Polignac number, because 25047797 - 2¹⁰ = 25046773 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 (25047707) 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, 797 + ... + 7122.

It is an arithmetic number, because the mean of its divisors is an integer number (6264720).

Almost surely, 2^25047797 is an apocalyptic number.

It is an amenable number.

25047797 is a deficient number, since it is larger than the sum of its proper divisors (11083).

25047797 is an equidigital number, since it uses as much as digits as its factorization.

25047797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11082.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 25047797 is about 5004.7774176281. Note that the first 3 decimals coincide. The cubic root of 25047797 is about 292.5880008915.

It can be divided in two parts, 2504 and 7797, that added together give a palindrome (10301).

The spelling of 25047797 in words is "twenty-five million, forty-seven thousand, seven hundred ninety-seven".