25297942219 has 4 divisors (see below), whose sum is σ = 27597755160. Its totient is φ = 22998129280.

The previous prime is 25297942193. The next prime is 25297942223. The reversal of 25297942219 is 91224979252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25297942219 - 2²⁷ = 25163724491 is a prime.

It is a super-2 number, since 2×25297942219² (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 (25297942249) 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, 1149906454 + ... + 1149906475.

It is an arithmetic number, because the mean of its divisors is an integer number (6899438790).

Almost surely, 2^25297942219 is an apocalyptic number.

25297942219 is a deficient number, since it is larger than the sum of its proper divisors (2299812941).

25297942219 is a wasteful number, since it uses less digits than its factorization.

25297942219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299812940.

The product of its digits is 1632960, while the sum is 52.

The spelling of 25297942219 in words is "twenty-five billion, two hundred ninety-seven million, nine hundred forty-two thousand, two hundred nineteen".