25896657442 has 4 divisors (see below), whose sum is σ = 38844986166. Its totient is φ = 12948328720.

The previous prime is 25896657439. The next prime is 25896657461. The reversal of 25896657442 is 24475669852.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 18178859241 + 7717798201 = 134829^2 + 87851^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6474164359 + ... + 6474164362.

Almost surely, 2^25896657442 is an apocalyptic number.

25896657442 is a deficient number, since it is larger than the sum of its proper divisors (12948328724).

25896657442 is a wasteful number, since it uses less digits than its factorization.

25896657442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12948328723.

The product of its digits is 29030400, while the sum is 58.

The spelling of 25896657442 in words is "twenty-five billion, eight hundred ninety-six million, six hundred fifty-seven thousand, four hundred forty-two".