25897217272 has 16 divisors (see below), whose sum is σ = 48568710240. Its totient is φ = 12945561216.

The previous prime is 25897217261. The next prime is 25897217299. The reversal of 25897217272 is 27271279852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344608 + ... + 412975.

It is an arithmetic number, because the mean of its divisors is an integer number (3035544390).

Almost surely, 2^25897217272 is an apocalyptic number.

It is an amenable number.

25897217272 is a deficient number, since it is larger than the sum of its proper divisors (22671492968).

25897217272 is a wasteful number, since it uses less digits than its factorization.

25897217272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761862 (or 761858 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 52.

The spelling of 25897217272 in words is "twenty-five billion, eight hundred ninety-seven million, two hundred seventeen thousand, two hundred seventy-two".