11551642025 has 24 divisors (see below), whose sum is σ = 17858541504. Its totient is φ = 7201022400.

The previous prime is 11551642019. The next prime is 11551642031. The reversal of 11551642025 is 52024615511.

It is an interprime number because it is at equal distance from previous prime (11551642019) and next prime (11551642031).

It is not a de Polignac number, because 11551642025 - 2⁶ = 11551641961 is a prime.

It is a super-2 number, since 2×11551642025² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11551641982 and 11551642000.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2998502 + ... + 3002351.

It is an arithmetic number, because the mean of its divisors is an integer number (744105896).

Almost surely, 2^11551642025 is an apocalyptic number.

It is an amenable number.

11551642025 is a deficient number, since it is larger than the sum of its proper divisors (6306899479).

11551642025 is a wasteful number, since it uses less digits than its factorization.

11551642025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000881 (or 6000876 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 11551642025 in words is "eleven billion, five hundred fifty-one million, six hundred forty-two thousand, twenty-five".