25715672212 has 12 divisors (see below), whose sum is σ = 45005407776. Its totient is φ = 12856984280.

The previous prime is 25715672153. The next prime is 25715672219. The reversal of 25715672212 is 21227651752.

It is a super-2 number, since 2×25715672212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25715672219) 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, 142438 + ... + 267805.

It is an arithmetic number, because the mean of its divisors is an integer number (3750450648).

Almost surely, 2^25715672212 is an apocalyptic number.

It is an amenable number.

25715672212 is a deficient number, since it is larger than the sum of its proper divisors (19289735564).

25715672212 is a wasteful number, since it uses less digits than its factorization.

25715672212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425918 (or 425916 counting only the distinct ones).

The product of its digits is 117600, while the sum is 40.

The spelling of 25715672212 in words is "twenty-five billion, seven hundred fifteen million, six hundred seventy-two thousand, two hundred twelve".