25122122152 has 8 divisors (see below), whose sum is σ = 47103979050. Its totient is φ = 12561061072.

The previous prime is 25122122143. The next prime is 25122122171.

25122122152 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 23936421796 + 1185700356 = 154714^2 + 34434^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×25122122152² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1570132627 + ... + 1570132642.

Almost surely, 2^25122122152 is an apocalyptic number.

It is an amenable number.

25122122152 is a deficient number, since it is larger than the sum of its proper divisors (21981856898).

25122122152 is a wasteful number, since it uses less digits than its factorization.

25122122152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140265275 (or 3140265271 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The spelling of 25122122152 in words is "twenty-five billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred fifty-two".