25712122611 has 16 divisors (see below), whose sum is σ = 39366073088. Its totient is φ = 14623005600.

The previous prime is 25712122567. The next prime is 25712122637. The reversal of 25712122611 is 11622121752.

It is a happy number.

It is not a de Polignac number, because 25712122611 - 2⁷ = 25712122483 is a prime.

It is a super-2 number, since 2×25712122611² (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 (25712122661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2896960 + ... + 2905821.

It is an arithmetic number, because the mean of its divisors is an integer number (2460379568).

Almost surely, 2^25712122611 is an apocalyptic number.

25712122611 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25712122611 is a deficient number, since it is larger than the sum of its proper divisors (13653950477).

25712122611 is a wasteful number, since it uses less digits than its factorization.

25712122611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5803002.

The product of its digits is 3360, while the sum is 30.

The spelling of 25712122611 in words is "twenty-five billion, seven hundred twelve million, one hundred twenty-two thousand, six hundred eleven".