25042205097 has 24 divisors (see below), whose sum is σ = 44519477184. Its totient is φ = 13209074784.

The previous prime is 25042205093. The next prime is 25042205117. The reversal of 25042205097 is 79050224052.

It is a happy number.

It is not a de Polignac number, because 25042205097 - 2² = 25042205093 is a prime.

It is a super-2 number, since 2×25042205097² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25042205093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15287463 + ... + 15289100.

It is an arithmetic number, because the mean of its divisors is an integer number (1854978216).

Almost surely, 2^25042205097 is an apocalyptic number.

It is an amenable number.

25042205097 is a deficient number, since it is larger than the sum of its proper divisors (19477272087).

25042205097 is a wasteful number, since it uses less digits than its factorization.

25042205097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30576589 (or 30576586 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 25042205097 in words is "twenty-five billion, forty-two million, two hundred five thousand, ninety-seven".