25703651197 has 4 divisors (see below), whose sum is σ = 29375601376. Its totient is φ = 22031701020.

The previous prime is 25703651179. The next prime is 25703651213. The reversal of 25703651197 is 79115630752.

It is a happy number.

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 not a de Polignac number, because 25703651197 - 2²³ = 25695262589 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 (25703651137) 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, 1835975079 + ... + 1835975092.

It is an arithmetic number, because the mean of its divisors is an integer number (7343900344).

Almost surely, 2^25703651197 is an apocalyptic number.

It is an amenable number.

25703651197 is a deficient number, since it is larger than the sum of its proper divisors (3671950179).

25703651197 is an equidigital number, since it uses as much as digits as its factorization.

25703651197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3671950178.

The product of its (nonzero) digits is 396900, while the sum is 46.

The spelling of 25703651197 in words is "twenty-five billion, seven hundred three million, six hundred fifty-one thousand, one hundred ninety-seven".