25203397097 has 4 divisors (see below), whose sum is σ = 25522427520. Its totient is φ = 24884366676.

The previous prime is 25203397091. The next prime is 25203397103. The reversal of 25203397097 is 79079330252.

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 an interprime number because it is at equal distance from previous prime (25203397091) and next prime (25203397103).

It is a cyclic number.

It is not a de Polignac number, because 25203397097 - 2³⁰ = 24129655273 is a prime.

It is a super-2 number, since 2×25203397097² (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 (25203397091) 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, 159515093 + ... + 159515250.

It is an arithmetic number, because the mean of its divisors is an integer number (6380606880).

Almost surely, 2^25203397097 is an apocalyptic number.

It is an amenable number.

25203397097 is a deficient number, since it is larger than the sum of its proper divisors (319030423).

25203397097 is an equidigital number, since it uses as much as digits as its factorization.

25203397097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319030422.

The product of its (nonzero) digits is 714420, while the sum is 47.

The spelling of 25203397097 in words is "twenty-five billion, two hundred three million, three hundred ninety-seven thousand, ninety-seven".