11420642525 has 24 divisors (see below), whose sum is σ = 14801207424. Its totient is φ = 8725147200.

The previous prime is 11420642413. The next prime is 11420642543. The reversal of 11420642525 is 52524602411.

It is not a de Polignac number, because 11420642525 - 2²⁰ = 11419593949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11420642491 and 11420642500.

It is a congruent number.

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, 347087 + ... + 378563.

It is an arithmetic number, because the mean of its divisors is an integer number (616716976).

Almost surely, 2^11420642525 is an apocalyptic number.

It is an amenable number.

11420642525 is a deficient number, since it is larger than the sum of its proper divisors (3380564899).

11420642525 is a wasteful number, since it uses less digits than its factorization.

11420642525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32141 (or 32136 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The spelling of 11420642525 in words is "eleven billion, four hundred twenty million, six hundred forty-two thousand, five hundred twenty-five".