25097404417 has 4 divisors (see below), whose sum is σ = 25123907376. Its totient is φ = 25070901460.

The previous prime is 25097404357. The next prime is 25097404459. The reversal of 25097404417 is 71440479052.

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 not a de Polignac number, because 25097404417 - 2⁷ = 25097404289 is a prime.

It is a super-2 number, since 2×25097404417² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25097414417) 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, 13250059 + ... + 13251952.

It is an arithmetic number, because the mean of its divisors is an integer number (6280976844).

It is a Proth number, since it is equal to 95739 ⋅ 2¹⁸ + 1 and 95739 < 2¹⁸.

Almost surely, 2^25097404417 is an apocalyptic number.

It is an amenable number.

25097404417 is a deficient number, since it is larger than the sum of its proper divisors (26502959).

25097404417 is an equidigital number, since it uses as much as digits as its factorization.

25097404417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26502958.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 25097404417 in words is "twenty-five billion, ninety-seven million, four hundred four thousand, four hundred seventeen".